A Retrospective Analysis Of Factors Influencing Primary Stability Of Dental Implant In Posterior Edentulous Maxilla

Background: Implant stability has been recognized as an essential factor link to osseointegration and predicts the survival rate of dental implants. The resonance frequency analysis (RFA) is a noninvasive device providing results in the form of the implant stability quotient (ISQ). The primary stability is also influenced by numerous factors such as surgical technique, implant morphology as well as bone quality and quantity. In the posterior maxilla, the sparse bone density leads to low primary stability. Aim: This retrospective study aims to analyze the factors that influenced the primary stability of dental implant of posterior maxilla.Material and methods: Patients records of treatment performed between January 2014 to December 2018 were reviewed for primary implant stability. Patients who had Straumannu00ae implants at posterior maxilla and exhibited RFA both buccal and mesial area immediate implant placement were included. The following variables were determined; patient age, gender, implantation region, timing of implant placement after tooth extraction (immediate placement, u2264 4 months after extraction, > 4 months after extraction), implant geometry (diameter and length), and adjunctive procedures during implantation (guided bone regeneration and transcrestal osteotomy). The RFA value was used The Kolmogorov-Smirnov Test to determine normal distribution. The Chi-Square Test was applied to compare the relationship between qualitative variables and the Kruskalu2013Wallis test was used to compare the mean. The Pearson correlation coefficient was used to determine correlation.Results: Seventy implants in 53 patients (male 19, female 34) were found. The mean age of this sample size is 59.04uf0b11.41 years old. The mean value of RFA of the buccal area is 65.76uf0b11.44 and the mean of RFA of mesial area 66.59uf0b11.55. The RFA value of the buccal and mesial area was significant correlate (p