Early peri-implant bone loss: a prospective cohort study. Issue 9 (September 2015)

• Record Type: Journal Article
• Authors: Cassetta, M.; Pranno, N.; Calasso, S.; Di Mambro, A.; Giansanti, M.
• Is Part Of: International journal of oral & maxillofacial surgery. Volume 44:Issue 9(2015:Sep.)
• Page Start: 1138
• Page End: 1145
• Publication Date: 2015-09
• Subjects: Mouth -- Surgery -- Periodicals; Maxilla -- Surgery -- Periodicals; Dentistry -- Periodicals; Dentistry, Operative; Oral Surgical Procedures; Surgery, Oral; Dentistry; Maxilla -- Surgery; Mouth -- Surgery; Electronic journals; Periodicals; 617.52059
• DOI: 10.1016/j.ijom.2015.04.002
• Languages: English
• ISSNs: 0901-5027

Abstract

<abstract abstract-type="author" id="abs0005"> <title id="sect0005">Abstract</title> <sec> <p id="spar0005">The aim of this study was to measure the early peri-implant bone level changes before the completion of an implant–abutment connection and to evaluate the influence of demographic, biologically relevant, anatomical, and implant-specific variables on these changes. A prospective cohort study design was used. STROBE guidelines were followed. The sample comprised 493 implants placed using a two-stage surgical procedure. Random allocation was used to determine the implant placement depth. Peri-apical radiographs taken at implant insertion and at the second surgery 2 months later were matched. Kappa statistics were used to compute intra- and inter-examiner reliability. The statistical analysis was performed at the implant level. Two-way analysis of variance (ANOVA) with the Bonferroni adjusted post hoc test was used to evaluate the influence of variables. One-way ANOVA with Tukey's range test and unpaired Student <italic>t</italic>-tests were used to analyze significant variables. Early marginal bone remodelling was −0.86 mm. The timing of implant placement (<italic>P</italic> = 0.00) and the depth of implant placement (<italic>P</italic> ≤ 0.05) significantly influenced early bone remodelling. Relevant radiographic early bone loss was found, but implants initially positioned below the alveolar crest and inserted ≥3 months after tooth extraction showed statistically significant higher marginal bone loss during the healing phase.</p> </sec> </abstract>