| 1. |
- Barone, A., et al.
(författare)
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Clinical and Histological changes after ridge preservation with two xenografts: preliminary results from a multicentre randomized controlled clinical trial
- 2017
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Ingår i: Journal of Clinical Periodontology. - : Wiley. - 0303-6979. ; 44:2, s. 204-214
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To evaluate and compare clinical and histological changes after ridge preservation procedures with those of spontaneous healing. Materials and Methods: Ninety patients were enrolled in the present randomized controlled clinical trial and underwent single-tooth extraction in the premolar/molar areas. Thirty sites were grafted with collagenated cortico-cancellous (coll), 30 sites with cortical (cort) porcine bone and 30 sites underwent natural healing. Primary (vertical and horizontal bone changes after 3 months) and secondary outcomes (histomorphometric after 3 months) were evaluated at implant placement. Results: The vertical bone changes at the grafted sockets were significantly (Rho < 0.0001) lower (0.30 mm for cort group and 0.57 mm for coll group) when compared to non-grafted sockets (2.10 mm for nat group). Moreover, the width reduction of the coll (0.93 mm) and cort (1.33 mm) groups was significantly lower (Rho < 0.0001) than the non-grafted group (3.60 mm). The analysis of subgroups attested that when premolar and molar sites were compared, the buccal bone loss appeared to be dependent both on tooth position and grafting material employed. Conclusion: The ridge preservation procedures had significantly better outcomes when compared to natural healing. The biomaterials did not differ for maintenance of bone width; even though, the bone height seemed to be better preserved with the cortical porcine bone.
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| 2. |
- de Oliveira, F. M., et al.
(författare)
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Quality of life assessment of patients utilizing orbital implant-supported prostheses
- 2018
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Ingår i: Clinical Implant Dentistry and Related Research. - : Wiley. - 1523-0899. ; 20:4, s. 438-443
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Tidskriftsartikel (refereegranskat)abstract
- Statement of ProblemEvaluate the effect of orbital prosthesis retained by implants through a specific quality of life (QOL) questionnaire provides important information on patients QOL, great incentive for the multidisciplinary team and public health support to continue work in this area. PurposeThe objective of the study was to evaluate patient satisfaction with orbital implant-supported prostheses using an adapted quality of life questionnaire. Materials and MethodsForty five patients using orbital implant-supported prostheses for a period ranging from six to 120 months. The subjects answered a questionnaire that consisted of 10 questions covering appearance, retention, conspicuousness, self-confidence, difficulty of placement, difficulty of removal, cleaning, limitation of activities, discomfort of tissues, and recommendation of the method to other patients. Answers were expressed using a visual 100-mm scale. The arithmetic mean of the responses was converted into a percentage to represent the satisfaction index. ResultsPatients demonstrated a high level of satisfaction on all items, with the lowest rate being for aesthetics and the highest being for recommending the method to other patients. High satisfaction rates regarding the placement and removal of the prosthesis, discomfort to the tissues, and cleaning suggest the ease of handling of the prosthesis. High satisfaction with retention, self-confidence, conspicuousness of the prosthesis, and limitation of activities indicated an association with a better social life. ConclusionsThe results showed that use of bone anchorage technique of extraoral prostheses provided a high level of satisfaction among patients, confirming that osseointegrated implants are a very important resource for the rehabilitation of orbital deformities.
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| 3. |
- Fickl, S., et al.
(författare)
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Porcine dermal matrix in the treatment of dehiscence-type defects - an experimental split-mouth animal trial
- 2015
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Ingår i: Clinical Oral Implants Research. - : Wiley. - 0905-7161. ; 26:7, s. 799-805
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To describe histometrical outcomes (tissue thickness, tissue height) of a porcine dermal matrix (PDX) and subepithelial connective tissue (CTG) in the treatment of dehiscence-type defects. Material and methods: In five beagle dogs buccal dehiscence defects were created on both upper canines. The defects were covered in a split-mouth design either with a porcine dermal matrix or subepithelial connective tissue. After 4months histometrical outcomes were evaluated using a nonparametric Brunner-Langer model. Results: Neither in the test nor in the control specimen signs of inflammation or foreign body reaction was detected. Histometrically, no significant difference was found for tissue thickness and height between both treatment groups. Conclusions: Porcine dermal matrix can be used for grafting of dehiscence-type defects. Augmentation of tissue thickness seems to be comparable to subepithelial connective tissue.
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| 4. |
- Guedes, R., et al.
(författare)
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Orbit Rehabilitation with Extraoral Implants: Impact of Radiotherapy
- 2015
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Ingår i: Clinical Implant Dentistry and Related Research. - : Wiley. - 1523-0899. ; 17:s1
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Tidskriftsartikel (refereegranskat)abstract
- PurposeThe aim of the study was to compare the success rates of osseointegration among irradiated and nonirradiated cases submitted to implant placement for anchorage of orbit prostheses from 2003 to 2011. Materials and MethodsCharts of 45 consecutive patients were analyzed, 31 men and 14 women, and they were divided in two groups, considering previous irradiation therapy. Nonirradiated group had 33 patients, and irradiated group had 12 patients. In total, 138 implants were installed, 42 (30.4%) in previously irradiated bone. ResultsThe overall implant survival rate was 96.4% with a success rate of 99.0% among the nonirradiated patients and 90.5% among the irradiated patients (p=0.03). ConclusionsResults showed that irradiated sites had a worse prognosis related to success of osseointegration, although the 90.5% survival rate in this group indicates that implant placement is a feasible alternative to anchor orbit prostheses considering the benefits that this technique offers to patients.
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| 5. |
- Larsson, Anna, 1973, et al.
(författare)
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Soft Tissue Integration of Hydroxyapatite-Coated Abutments for Bone Conduction Implants.
- 2015
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Ingår i: Clinical implant dentistry and related research. - : Wiley. - 1708-8208 .- 1523-0899. ; 17:2
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Tidskriftsartikel (refereegranskat)abstract
- The protocol for bone conduction hearing implant surgery involves reduction of soft tissues around the abutment to minimize the risk of skin-related complications. The present investigation was undertaken to demonstrate that hydroxyapatite-coated abutments provide improved soft tissue integration compared with conventional (pure titanium) abutments and are suitable for use without surgical removal of subepidermal soft tissues.
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| 6. |
- Rasmusson, Lars, 1962, et al.
(författare)
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Autogena stamceller för benrekonstruktion av defekter i käkarna
- 2018
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Ingår i: Tandläkartidningen. - 0039-6982. ; 109:11, s. 104-108
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Tidskriftsartikel (refereegranskat)abstract
- Fallbeskrivning av 2 patienter som efter misslyckad rekonstruktion av underkäken med autologa bentransplantat rekonstruerades med ben utvunnet ur stamceller från patientens egen fettvävnad. Differentiering och cellvitalitet kunde bekräftas före re-implantation. Moget ben kunde konstateras kliniskt, histologiskt och radiologiskt efter 1 år.
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| 7. |
- Rossi, R., et al.
(författare)
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The use of a collagenated porcine cortical lamina in the reconstruction of alveolar ridge defects. A clinical and histological study
- 2016
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Ingår i: Minerva Stomatologica. - 0026-4970. ; 65:5, s. 257-268
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Alveolar ridge reconstruction by means of resorbable and non-resorbable membranes has been proposed to increase the hard tissue volume in deficient sites. The purpose of this study was therefore to clinically and histologically evaluate the use of collagenated porcine bone lamina in case of horizontal and vertical bone augmentation procedures in conjunction with particulate porcine xenograft. METHODS: Overall, 8 partially edentulous patients (6 females and 2 males) with a mean age of 45 years requiring bone regeneration procedures to achieve a prosthetically driven implant placement were enrolled. All ridge defects were augmented using a xenogeneic cortical bone barrier in combination with particulate heterologous bone. Bone biopsies were collected during the re-entry procedure. RESULT S: A total of 15 implants were placed both simultaneously or in a staged approach in the augmented sites. No complications occurred during the rehabilitation. Histologically, the bone lamina was widely vascularized and integrated with the surrounding soft tissues and the native bone. The presence of osteoclastic lacunae suggested an active remodeling of the particulate graft and a gradual substitution with the newly formed bone. CONCLUSIONS: Alveolar reconstruction by means of the collagenated cortical lamina gave promising clinical and histological results. The rigidity and the slow resorption pattern allowed for the blood clot protection even in case of vertical defects, avoiding at the same time the re-entry surgery for its removal.
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| 8. |
- Slotte, Christer, 1954, et al.
(författare)
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Augmentation of severly resorbed alveolar crests with bovine bone blocks: A human histology pilot study
- 2017
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Ingår i: Clinical Implant Dentistry and Related Research. - : Wiley. - 1523-0899. ; 19:3, s. 581-585
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundAllo-/xenogenic bone blocks are used to treat bone defects. Few human histologic studies are found on their integration and capacity to augment new bone. PurposeTo study incorporation and stability of collagenated bovine bone blocks (CBB). Short term effects, histology, and morphometry on biopsy specimens are presented. Materials and MethodsNine patients exhibiting extremely narrow alveolar ridges had CBB adapted and fixed to the recipient bone and covered with collagen barriers. At median 6 months healing (range 2-14 months) biopsies were harvested and dental implants placed. Evaluation was done on the handling, primary healing together, and morphologic assessments of the biopsies. ResultsNew bone varied from 7.7% to 34.5%, lowest value being found in a patient showing graft exposure. Residual biomaterial varied between 2.9% and 48.2%. Implant placement was successful in all cases and all patients were rehabilitated with fixed superstructures. Several critical issues are discussed on the clinical handling of the material for example, soft tissue management and use of barrier membranes. ConclusionsCBB was found to integrate well in a predictable way. New bone could be seen at early time points and may shorten treatment time with implants in cases with thin alveolar ridges.
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| 9. |
- Öhman, David, et al.
(författare)
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Mandible reconstruction with patient-specific implants: Case report of five consecutive patients
- 2019
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Ingår i: The International journal of oral & maxillofacial implants. - : Quintessence Publishing. - 1942-4434 .- 0882-2786. ; 34:1
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this case report was to assess whether patient-specific implants (PSI: Xillocs) and soft tissue flaps contribute in reconstructing large mandibular defects. Five patients with a medical situation and history not suitable for free microvascular bone flaps were operated with PSI and evaluated. The mean follow-up time was 12 months. The excellent fit, convenient surgery, and esthetic outcome were seen as the major advantages. The PSI can, in the authors' experience, be considered as a useful alternative provided they are well embedded by viable tissue and attached to vital resection margins of the recipient bone.
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