| 1. |
- Al-Asfour, Adel, et al.
(författare)
-
Histologic analysis of a novel extracellullar matrix membrane for guided bone regeneration: an experimental study in rabbits.
- 2013
-
Ingår i: The International journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 1945-3388 .- 0198-7569. ; 33:2, s. 177-83
-
Tidskriftsartikel (refereegranskat)abstract
- This experiment was conducted to study the histologic feasibility and biologic impact of Ti02 impregnation of an extracellullar matrix (ECM) membrane in guided bone regeneration. Eighteen adult New Zealand White rabbits were used. Bilateral bone defects were created in edentulous areas of the maxilla. The defects were filled with demineralized freeze-dried bone (DFDB). ECM was randomly pretreated with a suspension containing saline and 3 mg Ti02 granules. A regular ECM membrane served as a control on the contralateral side. Healing periods were 2, 4, and 8 weeks. Histologic and histomorphometric analyses were performed. The parameters assessed were (1) zone of inflammatory cells adjacent to ECM membrane, (2) presence of cellullar ingrowth into ECM, and (3) presence of Ti02 particles within the ECM barrier membrane. In general, no adverse reactions toward both groups of ECM membranes could be noted. The Ti02 particles remained within the ECM after 8 weeks of healing, making histologic detection of ECM easy. Histomorphometric analysis revealed low numbers of inflammatory cells adjacent to the ECM surface and adequate preservation and integration of the barrier. Contrasting Ti02 particles impregnated into the ECM membrane can be a very useful tool for the detection of similar biologic materials in in vivo models.
|
|
| 2. |
|
|
| 3. |
- Araújo, Mauricio G, 1966, et al.
(författare)
-
The influence of Bio-Oss collagen on healing of an extraction socket: An experimental study in the dog.
- 2008
-
Ingår i: The International Journal of Periodontics & Restorative Dentistry. - 0198-7569. ; 28:2, s. 123-135
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Different approaches were advocated to preserve or improve the dimension and contour of the ridge following tooth extraction. In some of studies socket grafting apparently had a successful outcome while in other reports the benefits of such therapy were more questionable. Aim: The objective of the present experiment was to evaluate the effect on hard tissue modeling and remodeling of the placement of a xenograft in the fresh extraction socket in dogs. Material and Methods: Five mongrel dogs were used. Two mandibular premolars (4P4) were hemi-sected. The distal roots were carefully removed. In one socket, a graft consisting of Bio-Oss® Collage was placed while the contra-lateral site was left without grafting. After 3 months of healing, the dogs were euthanized and biopsies sampled. From each experimental site, 4 ground sections – 2 from the mesial root and 2 from the healed socket – were prepared, stained and examined in the microscope. Results: The placement of Bio-Oss® Collagen in the fresh extraction socket failed to inhibit the processes of modeling and remodeling that took place in the socket walls following tooth extraction. The biomaterial, however, apparently promoted de novo hard tissue formation, in particular in the cortical region of the extraction site. Hereby, the dimension of the hard tissue was maintained and the profile of the ridge was better preserved. Conclusion: The placement of a biomaterial in an extraction socket may promote bone modeling and at least temporarily compensate for marginal ridge contraction.
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
- Bolind, Pia, 1953, et al.
(författare)
-
A study of 275 retrieved Branemark oral implants
- 2005
-
Ingår i: The International journal of periodontics & restorative dentistry. - Chicago, Ill. : Quintessence Pub. Co.. - 0198-7569 .- 1945-3388. ; 25:5, s. 425-37
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this report was to describe the bone tissue response to Branemark oral implants retrieved from patients. The material consisted of consecutively received Branemark threaded oral implants and related patient data provided by clinicians. The implant samples were processed into undecalcified sections for evaluation under the light microscope. The analysis demonstrated a lower percentage of bone-to-implant contact for the unloaded implants as compared to the loaded implants. When the threads were divided into four different regions, the loaded implants had a lower percentage of bone-contacting length at the thread top as compared to the other three regions.
|
|
| 10. |
|
|
| 11. |
|
|
| 12. |
- Carcuac, Olivier, 1974, et al.
(författare)
-
Modified free gingival graft technique for root coverage at mandibular incisors: A case series
- 2021
-
Ingår i: International Journal of Periodontics and Restorative Dentistry. - : Quintessence Publishing. - 0198-7569 .- 1945-3388. ; 41:2
-
Tidskriftsartikel (refereegranskat)abstract
- Numerous surgical techniques for root coverage have been suggested with different degrees of success, as assessed by the proportion of complete root coverage. Mandibular incisors, teeth with a high frequency of gingival recession defects (GRDs), were associated with the least favorable outcomes due to unfavorable anatomical conditions. In the present series of three cases, a modified version of the free gingival graft technique for the purpose of root coverage at mandibular incisors is illustrated. The purpose of the modification of the original technique was to achieve improved blood supply from the recipient site to the graft, with the ultimate aim of enhancing predictability and outcomes of the procedure. In all included cases, complete or almost complete root coverage was achieved at challenging GRDs in the mandibular incisor area.
|
|
| 13. |
|
|
| 14. |
- Cederlund, A, et al.
(författare)
-
Efficacy of Carisolv-assisted caries excavation
- 1999
-
Ingår i: INTERNATIONAL JOURNAL OF PERIODONTICS & RESTORATIVE DENTISTRY. - 0198-7569. ; 19:5, s. 465-469
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 15. |
- Coelho, Paulo G, et al.
(författare)
-
Alveolar buccal bone maintenance after immediate implantation with a surgical flap approach: a study in dogs.
- 2011
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 31:6
-
Tidskriftsartikel (refereegranskat)abstract
- This study evaluated buccal bone maintenance after implantation with a surgical flap approach immediately following tooth extraction in a dog model. Mandibular premolars of six dogs were extracted, and threaded implants of 4-mm diameter and 8-mm length with as-machined and dual acid-etched surfaces were placed through balanced procedures in the distal root extraction sockets with a full-thickness flap design. Submerged healing was allowed for 4 weeks, and following euthanization, bone-to-implant contact and buccal and lingual bone loss were evaluated. None of the parameters evaluated were indicative of an effect of implant surface in hindering bone loss around immediately placed implants. (Int J Periodontics Restorative Dent 2011;31:e80-e86.).
|
|
| 16. |
- Cornelini, Roberto, et al.
(författare)
-
Deproteinized bovine bone and biodegradable barrier membranes to support healing following immediate placement of transmucosal implants: a short-term controlled clinical trial.
- 2004
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 24:6, s. 555-63
-
Tidskriftsartikel (refereegranskat)abstract
- This 6-month clinical study evaluated the use of a porous bone mineral matrix xenograft (Bio-Oss) as an adjunct to a biodegradable barrier membrane (Bio-Gide) to support healing following the immediate placement of transmucosal implants into extraction sockets. Twenty adult patients scheduled for tooth replacement with dental implants were accepted for participation. Following implant placement into the extraction site, subjects were assigned to one of two treatment alternatives for the remaining bone defect around the implant: (1) Bio-Oss + Bio-Gide membrane (test); or (2) Bio-Gide membrane (control). The treatment outcome was evaluated after 6 months by the use of clinical and radiographic variables. The null hypothesis of no treatment group differences was tested by ANOVA. At 6 months, the radiographic bone level remained unchanged compared to baseline in the test and control groups. No differences were observed between test and control groups in terms of mean probing attachment level. At proximal sites, the soft tissue margin was located 2.6 mm more coronal than the shoulder of the implant in the test group, compared to 1.3 mm in the control group. The corresponding figures for the lingual aspect were 2.3 mm and 1.1 mm, respectively, and at buccal sites 2.1 mm and 0.9 mm, respectively. The use of deproteinized bovine bone mineral as a membrane support at immediately placed transmucosal implants may offer an advantage in areas with high esthetic demands in terms of soft tissue support.
|
|
| 17. |
- De Paoli, Sergio, et al.
(författare)
-
A Prospective Clinical Assessment of BioHorizons Tissue-Level Implants
- 2023
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 43:1, s. 105-111
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This investigation was designed to evaluate crestal bone stability and soft tissue maintenance to Laser-Lok tapered tissue-level implants. Twelve patients presenting with an edentulous site adequate for the placement of two implants were recruited from four dental offices (2 to 4 patients per office). Each patient received two Laser-Lok tissue-level implants placed with a 3-mm interimplant distance according to a surgical stent. The implants were placed so that the Laser-Lok zone sat at the junction between hard and soft tissues. A total of 24 implants were placed, and all achieved satisfactory crestal bone stability and soft tissue maintenance 1 year after receiving the final prosthetic restoration.
|
|
| 18. |
- Farronato, Davide, et al.
(författare)
-
Decontamination of Customized Laser-Microtextured Titanium Abutments: A Comparative in Vitro Study of Different Cleaning Procedures.
- 2018
-
Ingår i: The International journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 1945-3388 .- 0198-7569. ; 38:5
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to evaluate different cleaning procedures for customized laser-microtextured titanium abutments. A total of 20 customized laser-microtextured abutments were randomized into four groups: no cleaning (control group), ultrasonic treatments + autoclave cycle (group 1), ultrasonic treatments + argon plasma (group 2), and only argon plasma (group 3). Surface contaminants were assessed through scanning electron microscopy and energy-dispersive x-ray spectroscopy microanalysis. In the control group, 99.96% of the abutment surfaces were contaminated with organic and inorganic pollutants. Group 3 showed the second highest contamination percentage, with almost 23% of the analyzed surfaces polluted. Samples in groups 1 and 2 were almost clean, with negligible traces of microparticles (0.009% and 0.047% of the surfaces were contaminated, respectively). These results were statistically significant for differences between control and test groups, and between groups 1 and 2 in comparison to 3 (P < .001). Abutment decontamination with argon plasma alone might not be as effective on laser-microtextured surfaces as other cleaning protocols.
|
|
| 19. |
- Felice, P., et al.
(författare)
-
Vertical Ridge Augmentation of an Atrophic Posterior Mandible with an Inlay Technique and Cancellous Equine Bone Block: A Case Report
- 2013
-
Ingår i: International Journal of Periodontics & Restorative Dentistry. - 0198-7569. ; 33:2, s. 159-166
-
Tidskriftsartikel (refereegranskat)abstract
- This report describes a successful implant prosthetic rehabilitation in an atrophic left posterior mandible in a 62-year-old man using a cancellous equine bone block as grafting material. Four months later, two bone specimens were retrieved for histologic evaluation and two dental implants were placed. Computed tomography and conventional radiography showed a 5-mm mean vertical bone gain. The biopsies showed new bone formation within the cancellous portion of the blocks and no foreign body reaction. Cancellous equine bone grafts may be an effective alternative to autogenous bone and inorganic bovine bone grafting for reconstruction of the posterior mandible using the inlay technique.
|
|
| 20. |
- Friberg, Bertil, 1950
(författare)
-
Bone augmentation at single-tooth implants using mandibular grafts: a one-stage surgical procedure.
- 1995
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 15:5, s. 436-45
-
Tidskriftsartikel (refereegranskat)abstract
- The surgical procedure of using a titanium implant in combination with a mandibular bone graft for a single-tooth reconstruction is presented. The donor bone was taken from the vestibular base, close to the symphysis of the mandible. Patients who were missing a maxillary incisor or canine tooth, and exhibiting a loss of supporting bone in the area, were found suitable for the technique.
|
|
| 21. |
- Friberg, Bertil, 1950, et al.
(författare)
-
Inferior alveolar nerve transposition in combination with Brånemark implant treatment.
- 1992
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 12:6, s. 440-9
-
Tidskriftsartikel (refereegranskat)abstract
- The surgical protocol for inferior alveolar nerve transposition together with the Brånemark implant treatment is described. The short-term follow-up results of the first ten procedures are presented and show an initial 2- to 3-week duration of anesthesia. In all regions treated, signs of paresthesia/hypoesthesia have been registered for 1 to 7 months. After 6 months, seven of the regions recovered completely with regard to nerve sensation.
|
|
| 22. |
- Friberg, Bertil, 1950
(författare)
-
Treatment with dental implants in patients with severe osteoporosis: a case report.
- 1994
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 14:4, s. 348-53
-
Tidskriftsartikel (refereegranskat)abstract
- The case report of a woman with severe osteoporosis who was treated with dental implants is presented. Polyarthritis was diagnosed in 1955, and a corticosteroid medication treatment was started in 1960. During the years, the patient has undergone multiple joint surgeries. Dental implants were inserted in the maxilla in 1987 and in the mandible in 1988. Due to a compression of the spine, the patient lost 12 cm in body height between 1991 and 1993; a spontaneous femur fracture was diagnosed in December 1992. However, the arch bone has been stable; the 6- and 5-year follow-up results of the maxillary and mandibular implants, respectively, are presented.
|
|
| 23. |
- Gkikas, Georgias, et al.
(författare)
-
A prospective study comparing the effect of L-PRF and porous titanium granules on the preservation of the buccal bone plate following immediate implant placement
- 2020
-
Ingår i: The international journal of periodontics & restorative dentistry. - : QUINTESSENCE PUBLISHING CO INC. - 0198-7569 .- 1945-3388. ; 40:5, s. 767-774
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to compare the effect of an autogenous blood concentrate (L-PRF) with the effect of white porous titanium granules (WPTG) on buccal bone remodeling. These materials were used to graft the void between the implant and the buccal bone following immediate implant placement. Clinical measurements were made at two time points, and the mean buccal bone horizontal dimension at placement was 2.94 ± 0.59 mm for L-PRF and 3.49 ± 0.99 mm for WPTG. At reentry, the values were 1.19 ± 0.90 mm and 2.12 ± 0.87 mm, respectively. Overall, there was no difference observed in the performance of the two materials regarding buccal bone resorption.
|
|
| 24. |
- Gkikas, Georgias, et al.
(författare)
-
A prospective study comparing the effect of L-PRF and porous titanium granules on the preservation of the buccal bone plate following immediate implant placement
- 2020
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 0198-7569 .- 1945-3388. ; 40:5, s. 767-774
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to compare the effect of an autogenous blood concentrate (L-PRF) with the effect of white porous titanium granules (WPTG) on buccal bone remodeling. These materials were used to graft the void between the implant and the buccal bone following immediate implant placement. Clinical measurements were made at two time points, and the mean buccal bone horizontal dimension at placement was 2.94 ± 0.59 mm for L-PRF and 3.49 ± 0.99 mm for WPTG. At reentry, the values were 1.19 ± 0.90 mm and 2.12 ± 0.87 mm, respectively. Overall, there was no difference observed in the performance of the two materials regarding buccal bone resorption.
|
|
| 25. |
- Glibert, Maarten, et al.
(författare)
-
The Influence of Initial Hard and Soft Tissue Dimensions on Initial Crestal Bone Loss of Immediately Loaded Dental Implants
- 2018
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence Publishing Co. Inc.. - 0198-7569 .- 1945-3388. ; 38:6, s. 873-878
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this case-control study was to evaluate the influence of soft tissue thickness at implant placement (thin [< 3 mm] vs thick [>= 3 mm]) and bone volume (abundant vs limited) on initial crestal bone remodeling of immediate postextraction and delayed (healed site) implants in immediate loading situations. A total of 67 patients with 133 implants could be evaluated, of which 77 were placed immediately after extraction and 56 in healed ridges. If sufficient bone volume is present and primary stability is achieved, immediate loading of the implant yields good clinical and radiographic outcomes, yet implants placed in healed ridges with thin soft tissues are more prone to initial crestal bone loss.
|
|
| 26. |
- Jemt, Torsten, 1950, et al.
(författare)
-
Fixed implant-supported prostheses with welded titanium frameworks.
- 1992
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 12:3, s. 177-84
-
Tidskriftsartikel (refereegranskat)abstract
- Eighty-six edentulous patients provided with Brånemark implants were randomly selected for fixed prostheses with modified framework designs. This study describes alternative laboratory techniques in which premachined titanium components are welded together to form the framework. Clinical experience, following the patients for 1 year after placement, indicates that it is a predictable technique with a similar pattern of complications as experienced by patients with cast frameworks supported by implants. The prostheses are considered to be slightly more bulky than cast frameworks, but seem to have, on a clinical level, a better fit to the implants.
|
|
| 27. |
- Jemt, Torsten, 1950
(författare)
-
Regeneration of gingival papillae after single-implant treatment.
- 1997
-
Ingår i: The International journal of periodontics & restorative dentistry. - 0198-7569. ; 17:4, s. 326-33
-
Tidskriftsartikel (refereegranskat)abstract
- An index to assess the size of the interproximal gingival papillae adjacent to single implant restorations was described and preliminary tested in a pilot study of retrospective material comprising 25 crowns in 21 patients. The result indicated a significant spontaneous regeneration of papillae (P < .001) after a mean follow-up period of 1.5 years. Based on these results, the general conclusion was made that the proposed index allows scientific assessment of soft tissue contour adjacent to single-implant restorations. The results also indicated that soft tissue changed in a systematic manner during the time period between insertion of the crowns and follow-up 1 to 3 years later.
|
|
| 28. |
|
|
| 29. |
- Martens, Filip, et al.
(författare)
-
Peri-implant Outcome of Immediately Loaded Implants with a Full-Arch Implant Fixed Denture : A 5-Year Prospective Case Series
- 2014
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 34:2, s. 189-197
-
Tidskriftsartikel (refereegranskat)abstract
- This prospective study evaluated clinical results of immediately loaded Biomet 3i implants with different surface topographies. Thirty-three periodontally compromised patients received 163 implants (130 in the maxilla and 33 in the mandible; 132 NanoTite and 31 Osseotite). After a mean loading period of 57 months, the survival rate was 96.3%. Mean crestal bone loss was 1.6 mm. No difference in bone loss was detected between the two surfaces. Only 6% of the implants had peri-implantitis based on total bone loss above 2 mm from the day of surgery in conjunction with probing depths of > 4 mm.
|
|
| 30. |
|
|
| 31. |
|
|
| 32. |
|
|
| 33. |
|
|
| 34. |
- Naito, Yoshihito, et al.
(författare)
-
Bone-Forming Effect of a Static Magnetic Field in Rabbit Femurs
- 2019
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 39:2, s. 259-264
-
Tidskriftsartikel (refereegranskat)abstract
- This study investigated the level of magnetic energy around implants possessing a static magnetic field (SMF) and assessed the in vivo influence of SMF on bone regeneration. Implants possessing a sintered neodymium magnet internally were placed in a rabbit femur. An implant without SMF was placed as control. After 12 weeks of healing in vivo, the bone samples were subjected to histologic/histomorphometric evaluation. The bone-to-implant contact for the test group and the control group were 32.4 +/- 13.6% and 17.1 +/- 4.5%, respectively, and the differences were statistically significant (P < .05). The results suggested that the SMF promoted new bone apposition.
|
|
| 35. |
- Neiva, Rodrigo, et al.
(författare)
-
Guidelines for Clinical Management of Laser-Etched (Laser-Lok) Abutments in Two Different Clinical Scenarios : A Preclinical Laboratory Soft Tissue Assessment Study
- 2016
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 36:3, s. 339-345
-
Tidskriftsartikel (refereegranskat)abstract
- One-stage implants were placed in the mandibles of eight beagle dogs with laser-etched (LL) and machined abutments. After 4 weeks, half of the LL abutments were disconnected and reconnected after 10 minutes of saline storage, and the other half were replaced with a new LL abutment (impression simulation) with or without sulcus de-epithelialization. After abutment change, systems remained in vivo for 3 weeks. Results showed that LL abutments can be reconnected and that sulcus scoring prior to LL placement of one-stage implants receiving machined abutments may be beneficial.
|
|
| 36. |
- Neiva, Rodrigo, et al.
(författare)
-
The Effect of Laser-Etched Surface Design on Soft Tissue Healing of Two Different Implant Abutment Systems : An Experimental Study in Dogs
- 2016
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 36:5, s. 673-679
-
Tidskriftsartikel (refereegranskat)abstract
- This study describes the early soft tissue morphology around two different implant systems that received either smooth or laser-etched abutments in a beagle dog model. Implants were placed in the healed mandibular molar region of eight beagle dogs and allowed to heal for 7 weeks. When the most apical aspect of the junctional epithelium (JE) was above or within the upper half of the laser-etched region, fibers were oriented perpendicular to the abutment surface. In contrast, JE positioned within the lower half of the laser-etched region or within or below the implant-abutment gap level presented fibers oriented parallel to the abutment surface.
|
|
| 37. |
- Nevins, M., et al.
(författare)
-
Equine-Derived Bone Mineral Matrix for Maxillary Sinus Floor Augmentation: A Clinical, Radiographic, Histologic, and Histomorphometric Case Series
- 2013
-
Ingår i: International Journal of Periodontics & Restorative Dentistry. - : Quintessence Publishing. - 0198-7569 .- 1945-3388. ; 33:4, s. 483-490
-
Tidskriftsartikel (refereegranskat)abstract
- The objective of this proof-of-principle multicenter case series was to examine the bone regenerative potential of a newly introduced equine-derived bone mineral matrix (Equimatrix) to provide human sinus augmentation for the purpose of implant placement in the posterior maxilla. There were 10 patients requiring 12 maxillary sinus augmentations enrolled in this study. Histologic results at 6 months demonstrated abundant amounts of vital new bone in intimate contact with residual graft particles. Active bridging between residual graft particles with newly regenerated bone was routinely observed in intact core specimens. A mean value of 23.4% vital bone formation was observed at 6 months. This compared favorably with previous results using xenografts to produce bone in the maxillary sinus for the purpose of dental implant placement. Both the qualitative and quantitative results of this case series suggest comparable bone regenerative results at 6 months to bovine-derived xenografts.
|
|
| 38. |
- Paniz, G., et al.
(författare)
-
Dual-Center Cross-Sectional Analysis of Periodontal Stability Around Anterior All-Ceramic Crowns with a Feather-Edge or Chamfer Subgingival Preparation
- 2020
-
Ingår i: International Journal of Periodontics & Restorative Dentistry. - : Quintessence Publishing. - 0198-7569. ; 40:4, s. 499-507
-
Tidskriftsartikel (refereegranskat)abstract
- Subgingival margins are often associated with adverse periodontal reactions, such as recession and gingival inflammation. The purpose of this cross-sectional dual-center study was to evaluate the periodontal health and stability of intrasulcular margins, comparing two prosthetic margin preparations: subgingival chamfer (SC) and subgingival feather-edge (SF) with gingival curettage. Ninety-six patients with 205 crowns (buccal margin 0.5 mm into the gingival sulcus) were included in the study. SF, gingival curettage, and intrasulcular restorative margin were prepared on 109 crowns; SC was prepared on 96. Restorations were in place for a mean of 55.9 months (range: 12 months to 10 years). No significant differences were found regarding probing depth between the two groups (mean buccal: 1.6 mm; mean interproximal: 2.3 mm). Significant increased recession was present around SCs, showing a higher margin-exposure frequency (buccal: 19.8% vs 3.7%; interproximal: 5.2% vs 1.4%). SC showed 8.5 times the risk of margin exposure compared to SF, men 5.5 times compared to women, and smokers 3.7 times compared to nonsmokers. Follow-up time was not a significant factor. SC sites showed a tendency for reduced buccal bleeding on probing compared to SF sites (3.0% vs 12.1%), but no significant difference was seen in a regression model. Plaque presence increased the risk of bleeding (4.1x), and women presented a higher risk of bleeding than men (3x). Subgingival margins can provide adequate periodontal health and stability if restorative procedures are well controlled and if patients are enrolled in an adequate maintenance program. SF with intrasulcular margin favors facial soft tissue stability, as reduced gingival recession was observed. The technique should be carefully applied to promote an adequate periodontal response.
|
|
| 39. |
- Parpaiola, Andrea, et al.
(författare)
-
CAD/CAM Implant Abutments : Peri-implant Hard and Soft Tissue Response with Up to 4 Years of Follow-up-A Retrospective Cohort Study Evaluation
- 2020
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 40:2, s. 193-201
-
Tidskriftsartikel (refereegranskat)abstract
- This retrospective study evaluated hard and soft tissue response and reported mechanical and technical complications around computer-aided design/computer-assisted manufactured (CAD/CAM) abutments. A total of 123 patients restored with titanium, gold-hue titanium, and zirconia CAD/CAM abutments were included (N = 291). Each patient was followed up for at least 2 years. Clinical and radiographic parameters were assessed annually and complications were recorded. No implant or reconstruction failures were reported. One fracture of a zirconia abutment occurred. The prosthetic survival rate after 4 years of function for restorations and abutments was 100% and 99.66%, respectively. No significant differences in biologic and radiographic indices were found. The bleeding on probing index was positive at 42% of implant sites, and it had no significant correlation with the overall change in marginal bone level (0.02 mm) of bone gain. The short-term survival of CAD/CAM abutments was reliable, no matter of the material used for manufacturing.
|
|
| 40. |
- Parpaiola, Andrea, et al.
(författare)
-
Virtual abutment design : a concept for delivery of CAD/CAM customized abutments-- report of a retrospective cohort
- 2013
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 33:1, s. 51-58
-
Tidskriftsartikel (refereegranskat)abstract
- This report presents early clinical experiences with the treatment of a consecutive cohort of 89 patients who received 125 prostheses supported by 205 milled abutments. Abutments were fabricated using unique computer-aided design software to deliver both titanium and zirconia abutments based on idealized values for tooth dimensions and emergence profiles as well as on a scan of the proposed definitive prosthesis.
|
|
| 41. |
- Sul, Young-Taeg, 1960, et al.
(författare)
-
The osseointegration properties of titanium implants with hydroxyapatite submicron-scale features in the rabbit tibia.
- 2014
-
Ingår i: The International journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 1945-3388 .- 0198-7569. ; 34:1
-
Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to biomechanically and histologically assess the stability and integration of titanium implants that include hydroxyapatite based submicron-scale features. Thirty-four 3.4 mm × 6.5 mm implants, equally split between test (grit blasted, etched, and submicron scale deposition) and control (grit blasted and etched) groups, were placed in the tibiae of New Zealand White rabbits. At 3-weeks follow-up, the group with the submicron deposition showed significantly improved bone response compared with the control group. The test group required higher removal torque values, with its post-torque histology demonstrating both enhanced bone formation and an intact interface indicative of a robust bone-to-implant bond.
|
|
| 42. |
- Sumi, Takashi, et al.
(författare)
-
Patient-Specific Gingiva-Colored Abutments : A Case Series
- 2014
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 34:4, s. 469-475
-
Tidskriftsartikel (refereegranskat)abstract
- The purpose of this report is to present a case series of gingiva-colored abutments utilized to meet patients' esthetic needs. The color of the abutment was determined by evaluating the color of the patients' marginal gingiva using a digital shade guide. Thereafter, anodic oxidation was performed on computer-aided design/computer-assisted manufacture abutments. The baseline digital color information was compared with the color of the gingiva after 1.5 years in three patients. The gingival colors as well as the marginal bone and soft tissue levels after 1.5 years were comparable to the baseline values. Thus, the gingiva-colored abutments obtained by anodic oxidation provided improved esthetics, especially for patients with thin gingival biotypes.
|
|
| 43. |
- Takeshita, Kenji, et al.
(författare)
-
Immediate Implant Placement and Loading of Single Implants in the Esthetic Zone : Clinical Outcome and Esthetic Evaluation in a Japanese Population
- 2015
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 35:5, s. 715-724
-
Tidskriftsartikel (refereegranskat)abstract
- This study evaluated the clinical outcomes of immediately loaded maxillary anterior single implants placed in fresh extraction sockets. A patient cohort that was treated 1.5 years earlier was recalled, and 18 patients (6 men, 12 women) with 21 implants were included. Clinical photographs and periapical radiographs were taken at follow-up and baseline to determine the bone loss and change in esthetics. No marginal bone loss was detected at follow-up (mean bone level standard deviation = 0.32 +/- 0.82 mm). Immediate implant placement and loading resulted in predictable clinical and esthetic outcomes, with soft and hard tissue levels remaining stable overtime.
|
|
| 44. |
- Takeshita, Kenji, et al.
(författare)
-
Use of 6-mm Short Implants in Japanese Patients : Clinical, Radiologic, and Patient Satisfaction Results in a Retrospective Study with a 2-Year Follow-up
- 2022
-
Ingår i: The international journal of periodontics & restorative dentistry. - : QUINTESSENCE PUBLISHING CO INC. - 0198-7569 .- 1945-3388. ; 42:2, s. 205-
-
Tidskriftsartikel (refereegranskat)abstract
- Implant therapy for tooth loss in the molar area is challenging due to the anatomical limitations, requiring bone augmentation procedures that are associated with high surgical complexity and long postsurgical recovery. Recently, many studies have demonstrated the usefulness of short implants. However, few studies have been performed in Japanese patients to evaluate peri-implant bone changes, changes in peri-implant epithelial tissue, and patient satisfaction. The present study included 16 patients (5 men, 11 women; mean age: 60 years) who received 26 short (6-mm) implants. Changes in peri-implant bone and epithelial tissue were measured radiographically at superstructure loading and after 2 years. Peri-implant pocket probing depth was measured at the epithelial tissue and compared at both time points. Patient satisfaction was graded using the Oral Health Impact Profile (OHIP-14) before treatment and at follow-up. The mean mesial and distal bone levels were -0.05 mm and 0.37 mm at loading, respectively, and were 0.33 mm and 0.53 mm after 2 years, respectively. Significant peri-implant bone formation for mesial and distal bone levels at both time points were determined by Wilcoxon signed-rank test. Mean probing depth increased slightly, from 3.03 mm at loading to 3.33 mm after 2 years, but no significant difference was found. The OHIP-14 found that patient satisfaction levels increased after 2 years. Using 6-mm short implants in sites with insufficient bone levels can be a highly beneficial treatment option for patients, as it avoids the need for bone augmentation. However, more long-term and detailed studies on the clinical outcomes for these implants are required. Int J Periodontics Restorative Dent 2022;42:205-213. doi: 10.11607/prd.5086
|
|
| 45. |
- Tavelli, Lorenzo, et al.
(författare)
-
Minimizing Patient Morbidity Following Palatal Gingival Harvesting: A Randomized Controlled Clinical Study.
- 2018
-
Ingår i: The International journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 1945-3388 .- 0198-7569. ; 38:6
-
Tidskriftsartikel (refereegranskat)abstract
- This clinical study was conducted to evaluate the impact of different hemostatic treatments following palatal gingival harvesting on patient discomfort. Fifty patients who needed a mucogingival surgery requiring gingival graft harvesting were enrolled and randomly assigned to one of five groups: (1) a control group in which only sutures were applied; (2) a cyanoacrylate group; (3) a periodontal dressing material group; (4) a hemostatic gelatin sponge group; and (5) a group in which the gelatin sponge and cyanoacrylate were combined. In the 2 weeks following the procedures, perception of pain, healing, consumption of drugs, and willingness to repeat the procedure were recorded through visual analog scale (VAS) by patients. Over the 2 weeks, lower pain (VAS) was found in all test groups compared to the control group (P < .01, value for time-group interaction). Notably, the gelatin sponge combined with cyanoacrylate group had very low pain (VAS ≤ 0.5 points) throughout the 14 days. The lowest healing scores at day 10 were associated with the control group (6.8 VAS points) in contrast to the four test groups (8.2 to 9.0 VAS points, P = .0001). Pain was inversely correlated with age (P < .05). Pain also depended on the apicocoronal dimension of the graft: the higher the graft, the more pain was experienced by the participants (0.4 VAS points per 1 mm, P < .05). Within the limitations of this study, palatal coverage appears to result in better outcomes when compared to suture alone. In particular, a double-layered protection of the palatal wound with a gelatin sponge combined with cyanoacrylate appeared to be the best option in reducing pain and postoperative discomfort.
|
|
| 46. |
- Toia, Marco, et al.
(författare)
-
Clinical Evidence of OsseoSpeed EV Implants: A Retrospective Study and Characterization of the Newly Introduced System.
- 2019
-
Ingår i: The International journal of periodontics & restorative dentistry. - : Quintessence Publishing. - 1945-3388 .- 0198-7569. ; 39:6, s. 863-874
-
Tidskriftsartikel (refereegranskat)abstract
- This retrospective study sought to compare a new implant (Astra Tech OsseoSpeed EV) with its predecessor (Astra Tech OsseoSpeed TX) by scanning electron microscopy and interferometry. Radiographic data from 19 patients who underwent implant restoration with EV (n = 49) with a median follow-up of 16 months were evaluated for mean bone level (MBL) changes from delivery of the definitive prosthesis. EV and TX did not differ in surface roughness, and both systems had a tight seal at the implant-abutment interface. The median MBL change of the EV was -0.02 mm mesiodistally after a median follow-up period of 16 months. Greater maintenance of MBL was found in the screw-retained restorations (n = 17) compared to cemented (0.35 ± 0.33 mm and -0.38 ± 0.76 mm, respectively; P = .03). The data suggest that EV shows minimal levels of bone loss and high implant survival.
|
|
| 47. |
- Tovar, Nick, et al.
(författare)
-
Bone Regeneration Around Implants Placed in Fresh Extraction Sockets Covered with a Dual-Layer PTFE/Collagen Membrane : An Experimental Study in Dogs
- 2014
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 34:6, s. 849-855
-
Tidskriftsartikel (refereegranskat)abstract
- This study investigated whether the use of a dual-layer polytetrafluoro ethylene (PTFE)/porcine-derived bioresorbable pericardium membrane enhances the osseointegration around implants compared to a single-layer porcine-derived bioresorbable pericardium membrane and a no-membrane control group. Endosseous implants were placed in the fresh extraction sockets of beagles. At 6 weeks, bone loss and apical soft tissue migration occurred in the control group, whereas bone successfully formed to the neck of the implant for the single-layer porcine-derived bioresorbable pericardium membrane group. The dual-layer PTFE/porcine-derived bioresorbable pericardium membrane showed bone growth coronal to the neck of the implant. Bone-to-implant contact and buccal bone loss were respectively higher and lower relative to the single-layer but not statistically different.
|
|
| 48. |
- Vandeweghe, Stefan, et al.
(författare)
-
Accuracy of optical dental digitizers : an in vitro study
- 2015
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 35:1, s. 115-121
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to evaluate the accuracy, in terms of trueness and precision, of optical dental scanners. An experimental acrylic resin cast was created and digitized using a microcomputed tomography (microCT) scanner, which sewed as the reference model. Five polyether impressions were made of the acrylic resin cast to create five stone casts. Each dental digitizer (Imetric, Lava ST, Smart Optics, KaVo Everest) made five scans of the acrylic resin cast and one scan of every stone cast. The scans were superimposed and compared using metrology software. Deviations were calculated between the datasets obtained from the dental digitizers and the microCT scanner (= trueness) and between datasets from the same dental digitizer (= precision). With exception of the Smart Optics scanner, there were no significant differences in trueness for the acrylic resin cast. For the stone casts, however, the Lava ST performed better than Imetric, which did better than the KaVo scanner. The Smart Optics scanner demonstrated the highest deviation. All digitizers demonstrated a significantly higher trueness for the acrylic resin cast compared to the plaster cast, except the Lava ST The Lava ST was significantly more precise compared to the other scanners. Imetric and Smart Optics also demonstrated a higher level of precision compared to the KaVo scanner. All digitizers demonstrated some degree of error. Stone cast copies are less accurate because of difficulties with scanning the rougher surface or dimensional deformations caused during the production process. For complex, large-span reconstructions, a highly accurate scanner should be selected.
|
|
