Crestal bone loss around submerged and non-submerged implants during the osseointegration phase with different healing abutment designs: a randomized prospective clinical study

2016 ◽  
Vol 29 (7) ◽  
pp. 808-812 ◽  
Author(s):  
Mariano Sánchez-Siles ◽  
Daniel Muñoz-Cámara ◽  
Noemi Salazar-Sánchez ◽  
Fabio Camacho-Alonso ◽  
Josè Luis Calvo-Guirado
Keyword(s):  
Clinical Study ◽  
Bone Loss ◽  
Prospective Clinical Study ◽  
Crestal Bone Loss

scholarly journals Radiographic Evaluation of Crestal Bone Loss Around Dental Implants in Maxilla and Mandible: One Year Prospective Clinical Study

2015 ◽  
Vol 49 (2) ◽  
pp. 128-136 ◽  
Author(s):  
Muhamed Ajanović ◽  
Adis Hamzić ◽  
Sead Redžepagić ◽  
Alma Kamber-Ćesir ◽  
Lejla Kazazić ◽  
...  
Keyword(s):  
Clinical Study ◽  
Bone Loss ◽  
Dental Implants ◽  
Radiographic Evaluation ◽  
Prospective Clinical Study ◽  
Crestal Bone Loss ◽  
One Year ◽  
Maxilla And Mandible

scholarly journals Factors Influencing Early Marginal Bone Loss around Dental Implants Positioned Subcrestally: A Multicenter Prospective Clinical Study

2019 ◽  
Vol 8 (8) ◽  
pp. 1168 ◽  
Author(s):  
Teresa Lombardi ◽  
Federico Berton ◽  
Stefano Salgarello ◽  
Erika Barbalonga ◽  
Antonio Rapani ◽  
...  
Keyword(s):  
Clinical Study ◽  
Bone Loss ◽  
Final Analysis ◽  
Prospective Clinical Study ◽  
Marginal Bone Loss ◽  
Insertion Depth ◽  
Mucosal Thickness ◽  
Implant Loading ◽  
Ceramic Restorations ◽  
Time Point

Early marginal bone loss (MBL) is a non-infective remodeling process of variable entity occurring within the first year after implant placement. It has a multifactorial etiology, being influenced by both surgical and prosthetic factors. Their impact remains a matter of debate, and controversial information is available, particularly regarding implants placed subcrestally. The present multicenter prospective clinical study aimed to correlate marginal bone loss around platform-switched implants with conical connection inserted subcrestally to general and local factors. Fifty-five patients were enrolled according to strict inclusion/exclusion criteria by four clinical centers. Single or multiple implants (AnyRidge, MegaGen, South Korea) were inserted in the posterior mandible with a one-stage protocol. Impressions were taken after two months of healing (T1), screwed metal-ceramic restorations were delivered three months after implant insertion (T2), and patients were recalled after six months (T3) and twelve months (T4) of prosthetic loading. Periapical radiographs were acquired at each time point. Bone levels were measured at each time point on both mesial and distal aspects of implants. Linear mixed models were fitted to the data to identify predictors associated with MBL. Fifty patients (25 male, 25 female; mean age 58.0 ± 12.8) with a total of 83 implants were included in the final analysis. The mean subcrestal position of the implant shoulder at baseline was 1.24 ± 0.57 mm, while at T4, it was 0.46 ± 0.59 mm under the bone level. Early marginal bone remodeling was significantly influenced by implant insertion depth and factors related to biological width establishment (vertical mucosal thickness, healing, and prosthetic abutment height). Deep implant insertion, thin peri-implant mucosa, and short abutments were associated with greater marginal bone loss up to six months after prosthetic loading. Peri-implant bone levels tended to stabilize after this time, and no further marginal bone resorption was recorded at twelve months after implant loading.

Survival of Short and Ultra-Short Locking-Taper Implants Supporting Single Crowns in the Posterior Mandible: A 3-Year Retrospective Study

2020 ◽  
Vol 46 (4) ◽  
pp. 396-406 ◽  
Author(s):  
Giorgio Lombardo ◽  
Annarita Signoriello ◽  
Miguel Simancas-Pallares ◽  
Mauro Marincola ◽  
Pier Francesco Nocini
Keyword(s):  
Retrospective Study ◽  
Bone Loss ◽  
Contact Point ◽  
Implant Survival ◽  
Point Position ◽  
Crestal Bone Loss ◽  
Short Implants ◽  
Single Crown ◽  
Bone To Implant Contact ◽  
Single Crowns

The purpose of this retrospective study was to determine survival and peri-implant marginal bone loss of short and ultra-short implants placed in the posterior mandible. A total of 98 patients received 201 locking-taper implants between January 2014 and January 2015. Implants were placed with a 2-stage approach and restored with single crowns. Clinical and radiographic examinations were performed at 3-year recall appointments. At that time, the proportion of implant survival by length, and variations of crestal bone levels (mean crestal bone loss and mean apical shift of the “first bone-to-implant contact point” position) were assessed. Significance level was set at 0.05. The total number of implants examined 36 months after loading included: 71 implants, 8.0 mm in length; 82 implants, 6.0 mm in length; and 48 implants, 5.0 mm in length. Five implants failed. The overall proportion of survival was 97.51%, with 98.59% for the 8.0-mm implants, 97.56% for the 6.0-mm implants, and 95.83% for the 5.0-mm implants. No statistically significant differences were found among the groups regarding implant survival (P = .73), mean crestal bone loss (P = .31), or mean apical shift of the “first bone-to-implant contact point” position (P = .36). Single-crown short and ultra-short implants may offer predictable outcomes in the atrophic posterior mandibular regions, though further investigations with longer follow-up evaluations are necessary to validate our results.

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