| 1. |
- Toia, Marco, et al.
(författare)
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Clinical Considerations of Adapted Drilling Protocol by Bone Quality Perception
- 2017
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Ingår i: International Journal of Oral & Maxillofacial Implants. - : Quintessence. - 0882-2786 .- 1942-4434. ; 32:6, s. 1288-1295
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To evaluate insertion torque value ( ITV) and marginal bone loss (MBL) of an implant system after a clinically perceived bone quality-adapted drilling. Materials and Methods: This multicenter retrospective study included patients treated with implants, conventionally loaded, in completely healed sites. Operators customized the osteotomy preparation according to radiographic assessment and their perception of bone quality. Drilling sequence, bone quality, and ITV were recorded at the time of surgery. Radiographs were taken at the time of implant placement and permanent restoration. MBL between implant placement and permanent restoration was calculated. The implant was used as the statistical unit. Demographic and implant characteristics were shown by means of descriptive statistics. Outcome values were compared using analysis of variance (ANOVA) and Kruskal-Wallis tests. Multiple regression models were used to test the effect of independent variables on ITV and MBL. Results: One hundred eighty-eight implants placed in 87 patients were included in the analysis. The mean observation period was 144 +/- 59 days. The mean ITV was 30.8 +/- 15.1 Ncm. ITV differed significantly based on arches (mandible/maxilla) (P = .001), bone quality (P < .001), implant diameter (P = .032), and drilling protocol (P = .019). Median MBL was 0.05 mm (0.00; 0.24). A significant difference was found between the mandible and maxilla (P = .008) and between drilling protocols (P = .011). In particular, significantly higher MBL was found in the undersized drilling protocol. Multiple regression analysis showed that ITV was influenced by bone quality and implant diameter. MBL was influenced by bone quality, implant diameter, ITV, and the interaction between bone quality and ITV. It was estimated that MBL was greater with increased bone density and ITV. Conclusion: Excessive ITV in dense bone can cause negative marginal bone responses. A presurgical radiographic assessment and the perception of bone quality are necessary to select an optimal drilling protocol and to minimize surgical trauma.
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| 2. |
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| 3. |
- Cecchinato, Denis, et al.
(författare)
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Osseointegration in periodontitis susceptible individuals.
- 2012
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Ingår i: Clinical oral implants research. - : Wiley. - 1600-0501 .- 0905-7161. ; 23:1, s. 1-4
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to examine tissue integration of implants placed (i) in subjects who had lost teeth because of advanced periodontal disease or for other reasons, (ii) in the posterior maxilla exhibiting varying amounts of mineralized bone.
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| 4. |
- Ferrus, Jorge, et al.
(författare)
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Factors influencing ridge alterations following immediate implant placement into extraction sockets.
- 2010
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Ingår i: Clinical oral implants research. - : Wiley. - 1600-0501 .- 0905-7161. ; 21:1, s. 22-29
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Aim: To identify factors that may influence ridge alterations occurring at the buccal aspect of the extraction site following immediate implant placement. Material and methods: In 93 subjects, single-tooth implants were placed immediately into extraction sockets in the maxilla (tooth locations 15-25). A series of measurements describing the extraction site were made immediately after implant installation and at re-entry, 16 weeks later. The implant sites were stratified according to four factors: (i) implant location (anterior/posterior), (ii) cause of tooth extraction (periodontitis/non-periodontitis), (iii) thickness of the buccal bone walls (1 mm) and (iv) the dimension of the horizontal buccal gap (1 mm). Results: (i) The location where the implant was placed (anterior/posterior) as well as (ii) the thickness of the buccal bone crest and (iii) the size of the horizontal buccal gap significantly influenced the amount of hard tissue alteration that occurred during a 4-month period of healing. At implant sites in the premolar segment, the fill of the horizontal gap was more pronounced than in the incisor-canine segment, while the vertical crest reduction was significantly smaller. Furthermore, at sites where the buccal bone wall was thick (>1 mm) and where the horizontal gap was large (>1 mm), the degree of gap fill was substantial. Conclusions: The thickness of the buccal bone wall as well as the dimension of the horizontal gap influenced the hard tissue alterations that occur following immediate implant placement into extraction sockets. To cite this article: Ferrus J, Cecchinato D, Pjetursson EB, Lang NP, Sanz M, Lindhe J. Factors influencing ridge alterations following immediate implant placement into extraction sockets. Clin. Oral Impl. Res. xx, 2009; 000-000.
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| 5. |
- Huynh-Ba, Guy, et al.
(författare)
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Analysis of the socket bone wall dimensions in the upper maxilla in relation to immediate implant placement.
- 2010
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Ingår i: Clinical oral implants research. - : Wiley. - 1600-0501 .- 0905-7161. ; 21:1, s. 37-42
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Animal and human researches have shown that immediate implant placement into extraction sockets failed to prevent socket dimensional changes following tooth extraction. It has been suggested that a minimal width of 1-2 mm of buccal bone is necessary to maintain a stable vertical dimension of the alveolar crest. AIM: To determine the dimensions of the bony wall at extraction sites in the esthetic zone (anterior teeth and premolars in the maxilla) and relate it to immediate implant placement. METHODS: As part of an ongoing prospective randomized-controlled multicenter clinical study on immediate implant placement, the width of the buccal and palatal bony walls was recorded at 93 extraction sites. RESULTS: The mean width of the buccal and palatal bony walls was 1 and 1.2 mm, respectively (P<0.05). For the anterior sites (canine to canine), the mean width of the buccal bony wall was 0.8 mm. For the posterior (premolar) sites, it was 1.1 mm (P<0.05). In the anterior sites, 87% of the buccal bony walls had a width < or = 1 mm and 3% of the walls were 2 mm wide. In the posterior sites, the corresponding values were 59% and 9%, respectively. CONCLUSIONS: If the criterion of a minimal buccal bone width of 2 mm to maintain a stable buccal bony wall is valid, only a limited number of sites in the anterior maxilla display such a clinical situation. The data suggested that in the majority of extraction sites in the anterior maxilla, thin (< or = 1 mm) buccal walls were present. This, in turn, means that in most clinical situations encountered, augmentation procedures are needed to achieve adequate bony contours around the implant.
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| 6. |
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| 7. |
- Lindhe, Jan, 1935, et al.
(författare)
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The alveolar process of the edentulous maxilla in periodontitis and non-periodontitis subjects.
- 2012
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Ingår i: Clinical oral implants research. - : Wiley. - 1600-0501 .- 0905-7161. ; 23:1, s. 5-11
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Tidskriftsartikel (refereegranskat)abstract
- Early implant failures may document that the bone tissue or the wound-healing process following installation surgery was compromised. Subjects who have lost teeth for periodontal reasons exhibit more earlier implant failures than subjects who had experienced tooth loss for other reasons.
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| 8. |
- Parpaiola, Andrea, et al.
(författare)
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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
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Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 40:2, s. 193-201
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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.
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| 9. |
- Parpaiola, Andrea, et al.
(författare)
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Dimensions of the healthy gingiva and peri-implant mucosa.
- 2015
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Ingår i: Clinical Oral Implants Research. - : John Wiley & Sons. - 0905-7161 .- 1600-0501. ; 26:6, s. 657-662
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To determine the dimensions of the soft tissue cuff present at various aspects of teeth and to compare these dimensions to those of the mucosa surrounding single implants. Material and methods: Fifty volunteers were recruited that were ≥25 years of age and exhibited no signs of (i) untreated caries; (ii) loss of periodontal tissue support in the incisor, canine, and premolar regions; (iii) systemic or local disease. Furthermore, among the 50 patients recruited (iV), 27 had one single implant in the maxilla with teeth present mesial and/or distal to the implant. Probing pocket depth (PPD) and transmucosal sounding depth (TS) were assessed by five experienced, carefully calibrated examiners and with the use of a periodontal probe at the proximal (mesial, distal) and flat (facial, buccal and palatal/lingual) surfaces of all teeth/implants. The width of the keratinized mucosa (KM) was also determined. Results: It was demonstrated that (i) PPD and TS were greater at proximal than at flat surfaces at both tooth and implant sites. In addition, both PPD and TS were deeper at implant than at tooth sites. The TS values documented that the cuff of healthy soft tissue that surrounded a tooth varied between 2 mm at flat surfaces and 4 mm at proximal surfaces, while at implant sites, the mucosa at proximal as well as flat surfaces was 1–1.5 mm greater. Conclusion: The probing pocket depth (PPD) and the transmucosal sounding depth (TS) values were greater at proximal than at flat, that is, facial/palatal (lingual) surfaces at tooth sites and frequently also at implant sites. Furthermore, the PPD and the TS dimensions were greater at implant than at adjacent tooth sites.
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| 10. |
- Parpaiola, Andrea, et al.
(författare)
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Virtual abutment design : a concept for delivery of CAD/CAM customized abutments-- report of a retrospective cohort
- 2013
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Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 33:1, s. 51-58
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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.
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