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

Abstract

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.

Prevalence of peri‐implantitis after alveolar ridge preservation at periodontitis and nonperiodontitis extraction sites: A retrospective cohort study

“…Therefore, implants at premolar sites may lead to PI more frequently than do those at molar areas. Similarly, in other studies of implant type, tissue‐level implants have caused less bone loss than have bone‐level implants 32,33 . However, split‐mouth research indicated that tissue‐ and bone‐level implants have similar clinical and radiographic outcomes among patients who have a history of periodontitis 34 .…”

Analysis of Peri-Implant Bone Loss with a Convergent Transmucosal Morphology: Retrospective Clinical Study

“…It is important to note that neck design was statistically significant. Similarly, Agustín et al (2021) [ 23 ] placed a total of 120 implants divided into two groups. The first group was composed of implants with convergent transepithelial tissue-level collars, and the second group were bone-level implants, among which significant differences were found regarding peri-implant bone loss.…”

Assessment of crestal bone loss and periodontal parameters of polymer infiltrated ceramic network versus lithium disilicate implant hybrid abutment crowns in the esthetic zone (A randomized clinical trial)

“…Moreover, periapical radiography offers the lowest exposure dose compared to other modalities. 26 Thus, we assessed differences in crestal bone levels after oneyear of follow-up using standardized periapical radiographs. A long cone paralleling technique and a customized radiographic stent were used to standardize the x-ray incidence method.…”

“…This stent was saved for later visits to allow standardized film placement and cone angulation throughout the follow-up period. 13,26 In order to have accurate results, it is mandatory to start with the determination of definite reference points on implant surfaces.…”

“…The radiographs should show visible implant threads to ensure that the x-ray beam is projected perpendicular to the object and film. 13,26 Clinical peri-implant evaluation is crucial for detecting early signs of disease and planning therapeutic interventions. Monitoring these clinical signs, such as probing depth, bleeding on probing, plaque accumulation, and suppuration, is essential in diagnosing periodontal diseases.…”