Objectives The aim of this cross-sectional study is to determine the association between the absence of keratinized mucosa and peri-implant tissue health. Methods and materials This cross-sectional study comprised 412 implants from 200 patients from faculty-based clinics. Demographic, medical, and clinical information were collected. The modified sulcus bleeding index, modified plaque index, mucosal recession, probing depth, bone level, the width of keratinized mucosa, and implant status were evaluated by three calibrated examiners. Each implant was categorized into either of two peri-implant mucosa groups: keratinized mucosa (KM) or non-keratinized mucosa (NKM). The chi-square test was performed to the association between the keratinized mucosa groups and peri-implant clinical parameters and peri-implant status. Multiple logistic regression models were analyzed to test potential associations between peri-implant clinical parameters and the presence or absence of keratinized mucosa. Results Thirty-two implants (7.8%) were categorized into the NKM group. The prevalence of peri-implantitis was 12.5% and 8.3% at the subject level and implant level, respectively. The NKM group was associated with more plaque accumulation, mucosal recession, interproximal bone level ≥ 3 mm, and peri-implantitis ( p < 0.05). After controlling for confounding factors, the NKM group demonstrated higher plaque accumulation, mucosal recession, and interproximal bone level ≥ 3 mm with adjusted odds ratios of 2.98 (1.33–6.66), 3.20 (95% CI, 1.03–9.90), and 4.62 (1.70–12.58), respectively. Conclusion Within the limitation of this study, the lack of keratinized mucosa around the dental implants was significantly associated with more plaque accumulation, mucosal recession, interproximal bone level ≥ 3 mm, and peri-implantitis.
Purposes: This aim of this cross-sectional study was to investigate the factors associated with patient satisfaction in patients with a dental implant-supported single crown or fixed prosthesis.Materials and methods: One hundred and ninety-six patients with dental implants functioning more than 1 year were provided with a 13-question questionnaire to report their satisfaction regarding the functional aspects, aesthetic outcome, cleansing ability, general satisfaction, treatment cost, and overall satisfaction. Patient satisfaction was reported using a visual analogue scale (VAS). The association of these variables and each aspect of satisfaction were investigated by multivariate linear regression analysis.Results: One hundred forty-four of 196 patients reported high overall satisfaction (VAS > 80%). All aspects of patient satisfaction levels were very high (mean VAS > 80%), except for satisfaction in cleansing ability and treatment cost (mean VAS < 75%). The patients with a history of implant failure had significantly lower satisfaction in the functional aspects, aesthetic outcome, and general satisfaction than patients without implant failure (p ≤ 0.001). The subjects who experienced mechanical complication were less satisfied with treatment cost (p = 0.002). Sinus augmentation negatively affected functional satisfaction compared with individuals without sinus augmentation (p = 0.041). The subjects with a higher income or a posterior implant had significantly higher overall satisfaction (p = 0.003 and p < 0.001, respectively). Moreover, restoration by specialists positively affected general satisfaction compared with being restored by post-graduate students (p = 0.01). Conclusion:Patients restored with a dental implant-supported single crown or fixed prosthesis had very high patient satisfaction. Implant failure, mechanical complication, and sinus augmentation negatively affected patient satisfaction in multiple aspects. In contrast, the factors positively affecting patient satisfaction were a posterior implant,
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