suggest that some reproductive factors associated with BC differ across ethnicities and time trends, perhaps due to the prevalence of reproductive factors and the baseline hazard of BC.

Skeletal Class II malocclusion often leads to excessive overjet due to differences in arch growth, and in some cases, an unstable contact point of the mandibular incisors can result in deep bite. When the relationship of anterior teeth is unstable, the extruded height of the mandibular incisors must be adjusted, followed by restoration of the maxillary incisors. During this process, an interim restoration period is necessary to evaluate aesthetics, phonetics, and function of the anterior teeth, and if extractions and implants are involved, the restoration steps may increase. In this case, facial scan was utilized to obtain extraoral data for stepwise fabrication of provisional restorations, ultimately transitioning them into final restorations. This approach aimed to improve both function and aesthetics for the patient, who required multiple implants and fixed prostheses on natural teeth, including in the anterior region.

Skeletal Class II malocclusion often leads to excessive overjet due to differences in arch growth, and in some cases, an unstable contact point of the mandibular incisors can result in deep bite. When the relationship of anterior teeth is unstable, the extruded height of the mandibular incisors must be adjusted, followed by restoration of the maxillary incisors. During this process, an interim restoration period is necessary to evaluate aesthetics, phonetics, and function of the anterior teeth, and if extractions and implants are involved, the restoration steps may increase. In this case, facial scan was utilized to obtain extraoral data for stepwise fabrication of provisional restorations, ultimately transitioning them into final restorations. This approach aimed to improve both function and aesthetics for the patient, who required multiple implants and fixed prostheses on natural teeth, including in the anterior region.

Skeletal Class II malocclusion often leads to excessive overjet due to differences in arch growth, and in some cases, an unstable contact point of the mandibular incisors can result in deep bite. When the relationship of anterior teeth is unstable, the extruded height of the mandibular incisors must be adjusted, followed by restoration of the maxillary incisors. During this process, an interim restoration period is necessary to evaluate aesthetics, phonetics, and function of the anterior teeth, and if extractions and implants are involved, the restoration steps may increase. In this case, facial scan was utilized to obtain extraoral data for stepwise fabrication of provisional restorations, ultimately transitioning them into final restorations. This approach aimed to improve both function and aesthetics for the patient, who required multiple implants and fixed prostheses on natural teeth, including in the anterior region.

Skeletal Class II malocclusion often leads to excessive overjet due to differences in arch growth, and in some cases, an unstable contact point of the mandibular incisors can result in deep bite. When the relationship of anterior teeth is unstable, the extruded height of the mandibular incisors must be adjusted, followed by restoration of the maxillary incisors. During this process, an interim restoration period is necessary to evaluate aesthetics, phonetics, and function of the anterior teeth, and if extractions and implants are involved, the restoration steps may increase. In this case, facial scan was utilized to obtain extraoral data for stepwise fabrication of provisional restorations, ultimately transitioning them into final restorations. This approach aimed to improve both function and aesthetics for the patient, who required multiple implants and fixed prostheses on natural teeth, including in the anterior region.

Skeletal Class II malocclusion often leads to excessive overjet due to differences in arch growth, and in some cases, an unstable contact point of the mandibular incisors can result in deep bite. When the relationship of anterior teeth is unstable, the extruded height of the mandibular incisors must be adjusted, followed by restoration of the maxillary incisors. During this process, an interim restoration period is necessary to evaluate aesthetics, phonetics, and function of the anterior teeth, and if extractions and implants are involved, the restoration steps may increase. In this case, facial scan was utilized to obtain extraoral data for stepwise fabrication of provisional restorations, ultimately transitioning them into final restorations. This approach aimed to improve both function and aesthetics for the patient, who required multiple implants and fixed prostheses on natural teeth, including in the anterior region.

Purpose: The aim of this study was to determine predictors of implant treatment failure after alveolar ridge preservation (ARP). Methods: The study included patients who received implant treatment after ARP between 2014 and 2020. The demographic, clinical, and radiographic data of these patients were collected. Implant success was defined as the absence of pain or tenderness, no mobility, a change of <2 mm in marginal bone level, and no exudation. A Cox proportional hazards model with shared frailty was used to estimate hazard ratios (HRs) for the demographic, clinical, and radiographic factors contributing to implant failure. Results: The study included 528 implants from 412 patients. The cumulative success rate over 3.5±1.8 years (mean ± standard deviation) was 89.0% (95% confidence interval [CI], 85.4%–92.8%), with 43 failed implants. The multiple Cox proportional hazards model with shared frailty indicated that a pristine bone engagement (PBE) of <1.1 mm was significantly associated with implant failure (HR, 2.50; 95% CI, 1.34–4.67; P=0.004). Conclusions PBE of at least 1.1 mm appears to decrease the probability of implant failure after ARP.