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

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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Assessment of Peri-Implant Soft Tissues Conditions around Short and Ultra-Short Implant-Supported Single Crowns: A 3-Year Retrospective Study on Periodontally Healthy Patients and Patients with a History of Periodontal Disease

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17249354 ◽

2020 ◽

Vol 17 (24) ◽

pp. 9354

Author(s):

Giorgio Lombardo ◽

Annarita Signoriello ◽

Mauro Marincola ◽

Pier Francesco Nocini

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Periodontal Disease ◽

Soft Tissues ◽

Implant Survival ◽

Marginal Bone Loss ◽

Implant Complications ◽

Short Implants ◽

History Of ◽

Single Crowns

The aim of this retrospective study was to evaluate implant survival, marginal bone loss and peri-implant complications in 326 short and ultra-short implants. Implants were placed in the maxillary and mandibular posterior regions of 140 patients with (PP) and without (NPP) a history of periodontal disease. Clinical and radiographic examinations were performed at 3-year recall appointments. The 8.0, 6.0 and 5.0 mm-length implants placed in PP and NPP were respectively 43.75% and 38.46%, 35.10% and 34.19%, 21.15% and 27.35%; 325 implants (one early failure) were rehabilitated with single crowns in 139 patients. Overall implant survival after 3 years of follow-up was 97.55%, 98.08% and 96.61% for PP and NPP (p = 0.46). Crestal bone level variations were not statistically different among PP and NPP; 15.41% of implants presented signs of mucositis, 14.71% and 16.67% in PP and NPP (p = 0.64). Setting the threshold for bone loss at 2 mm after 36 months, peri-implantitis prevalence was 2.2%, 1.96% and 2.63% in PP and NPP (p = 0.7). Overall implant success was 82.39%, 83.33% and 80.7% for PP and NPP (p = 0.55). Short-term outcomes suggest that short and ultra-short locking-taper implants can successfully be restored with single crowns in the posterior jaws both in PP and NPP.

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Changing Preference of One- Vs. Two-Stage Implant Placement in Partially Edentulous Individuals: An 18-Year Retrospective Study

Applied Sciences ◽

10.3390/app10207060 ◽

2020 ◽

Vol 10 (20) ◽

pp. 7060

Author(s):

Liat Chaushu ◽

Sarit Naishlos ◽

Ofir Rosner ◽

Eran Zenziper ◽

Ari Glikman ◽

...

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Gingival Index ◽

Implant Survival ◽

Two Stage ◽

One Stage ◽

Implant Placement ◽

Crestal Bone Loss ◽

The One

The purpose of the present long-term retrospective study was to assess the changing preference of one- vs. two-stage implant placement in partially edentulous individuals. The clinical outcome measures were one- vs. two-stage implant placement, implant survival, and gingival index. The radiological outcome measure was crestal bone loss. Other recorded information included gender, age, implant characteristics (brand, type, length, diameter) and implant location (maxilla/mandible). A total of 393 implants in 111 patients were included. The results revealed that there were no significant demographic differences between the one- and two-stage implant placement groups. There was a preference for one-stage surgery when wide diameter implants were used and when the number of implants per patient was ≤3. The mandible was the major implant site in the one-stage surgery group. Crestal bone loss and gingival index were similar for the two groups in both the short and long term. It can be concluded that lack of any long-term differences in implant survival, crestal bone loss and gingival health around implants after one- or two-stage implant placement promoted a significant change over 18 years, increasing to 50% the prevalence of one-stage surgery.

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Implant Survival and Crestal Bone Loss Around Extra-Short Implants Supporting a Fixed Denture: The Effect of Crown Height Space, Crown-to-Implant Ratio, and Offset Placement of the Prosthesis

The International Journal of Oral & Maxillofacial Implants ◽

10.11607/jomi.3404 ◽

2014 ◽

Vol 29 (3) ◽

pp. 682-689 ◽

Cited By ~ 36

Author(s):

Eduardo Anitua ◽

Mohammad Alkhraist ◽

Laura Piñas ◽

Leire Begoña ◽

Gorka Orive

Keyword(s):

Bone Loss ◽

Implant Survival ◽

Crown Height ◽

Crestal Bone Loss ◽

Short Implants

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Peri-Implant Behavior of Tissue Level Dental Implants with a Convergent Neck

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18105232 ◽

2021 ◽

Vol 18 (10) ◽

pp. 5232

Author(s):

Rubén Agustín-Panadero ◽

Irene Bermúdez-Mulet ◽

Lucía Fernández-Estevan ◽

María Fernanda Solá-Ruíz ◽

Rocío Marco-Pitarch ◽

...

Keyword(s):

Retrospective Study ◽

Statistical Analysis ◽

Bone Loss ◽

Tissue Level ◽

Functional Load ◽

Implant Placement ◽

Group I ◽

Bone Level ◽

Single Crowns ◽

Functional Loading

Introduction: The aim of this retrospective study was to analyze the radiographic peri-implant bone loss of bone level implants and tissue level implants with a convergent neck in screw-retained single crowns and in screw-retained fixed partial prostheses, after two years of functional loading. Materials and methods: The sample was divided into two groups according to their type: Group I: supracrestal implants with convergent transmucosal neck; Group II: crestal implants. In each group we distinguish two subgroups according to the type of prosthetic restoration: single crowns and a three-piece fixed partial prosthesis on two implants. To quantify bone loss, parallelized periapical radiographs were analyzed at the time of implant placement and after two years of functional load. Results: A total of 120 implants were placed in 53 patients. After statistical analysis it was observed that for each type of implant bone loss was 0.97 ± 0.91 mm for bone level and 0.31 ± 0.48 mm for tissue level. No significant differences were found regarding the type of prosthesis and the location (maxilla or mandible) of the implants. Conclusions: Tissue level implants with a convergent transepithelial neck exhibit less peri-implant bone loss than bone level implants regardless of the type of prosthesis.

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Clinical outcomes of dental implants placed in the same region where previous implants failed due to peri-implantitis: a retrospective study

International Journal of Implant Dentistry ◽

10.1186/s40729-021-00392-1 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Eduardo Anitua ◽

Adriana Montalvillo ◽

Asier Eguia ◽

Mohammad Hamdan Alkhraisat

Keyword(s):

Retrospective Study ◽

Survival Rate ◽

Bone Loss ◽

Clinical Outcomes ◽

Dental Implants ◽

Demographic Data ◽

High Survival ◽

Implant Survival ◽

Marginal Bone Loss ◽

Bone Level

Abstract Purpose There is paucity in the studies that assess dental implants replacing failed dental implants due to peri-implantitis. This study aims to evaluate the clinical outcomes of these implants in terms of implant survival and marginal bone loss. Methods Patients in this retrospective study were selected if having one or more implants removed due to peri-implantitis and the placement and loading of dental implants in the same region from April 2010 to December 2019. Information was collected about the patient's demographic data, implant dimensions, surgical and prosthetic variables. Changes in peri-implant bone level, cumulative implant survival rate and technical complications were assessed. Results Three hundred and eighty one dental implants in 146 patients that were placed in the same position or one-tooth position mesially/distally to the site of explantation were included. The patients' mean age was 63 ± 10 years. Ninety seven patients were females and 49 were males. After a mean follow-up of 34 ± 17 months, two implants failed. The cumulative survival rate was 99%. The marginal bone loss was −0.1 ± 0.6. Immediate or delay replacement of the failed implant did not affect implant survival or marginal bone stability. All the prostheses were screw-retained and presented the following complications: ceramic chipping (3 events), resin tooth fracture (1 event) and prosthetic screw loosening (1 event). Conclusions Dental implants replacing failed implants due to peri-implantitis would be an option in the management of peri-implantitis. They showed high survival rate and marginal bone stability.

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