Risk indicators for marginal bone resorption around implants in function for at least 4 years: A retrospective longitudinal study
Journal of Periodontology Aug 15, 2019
Mameno T, Wada M, Otsuki M, et al. - Via analyzing 514 patients (mean age was 62.9 years) with 1,535 implants, researchers identified potential risk indicators correlated with marginal bone resorption around implants in function for at least 4 years. To investigate relationships between marginal bone level change (MBLC) and various factors, a hierarchical regression analysis using liner mixed-effects models was performed. Data reported that mean annual MBLC was 0.048 mm, and mean functional time was 5.96 years. According to findings, longer functional time, poor oral hygiene, loss of occlusal support, location in the maxilla, cement-retained superstructure, and less keratinized mucosa should be considered as risk indicators for bone resorption around implants within the limitations of this retrospective longitudinal study. No statistically significant associations were found between bone resorption and some variables known as risk factors, like diabetes, smoking, and periodontitis history.
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