Background: There is growing evidence on the impact of thin gingival phenotype (TnP) and inadequate keratinized mucosa width (KMW <2 mm) around dental implants on peri-implant health. This study investigated the role of TnP and inadequate KMW (<2 mm) as risk indicators for peri-implantitis and mucositis and on dental patient-reported outcomes. Methods: Sixty-three patients with 193 implants (mean follow-up of 6.9 ± 3.7 years) were given a clinical and radiographic examination and a questionnaire to assess patient awareness of food impaction and pain/discomfort. Chi-squared tests and regression analysis for clustered data were used to compare outcomes. Results:Implants with TnP had a statistically higher prevalence of periimplantitis (27.1% versus 11.3%; PR, 3.32; 95% confidence interval (CI), 1.64-6.72; P = 0.001) peri-implant mucositis (42.7% versus 33%; PR, 1.8; 95% CI, 1.12-2.9; P = 0.016) and pain/discomfort during oral hygiene (25% versus 5%; PR, 3.7; 95% CI, 1.06-12.96; P = 0.044) than thick phenotype. Implants with inadequate KMW had a statistically higher prevalence of peri-implantitis (24.
Additive manufacturing (AM) is the automated production of three-dimensional (3D) structures through successive layer-by-layer deposition of materials directed by computer-aided-design (CAD) software. While current clinical procedures that aim to reconstruct hard and soft tissue defects resulting from periodontal disease, congenital or acquired pathology, and maxillofacial trauma often utilize mass-produced biomaterials created for a variety of surgical indications, AM represents a paradigm shift in manufacturing at the individual patient level. Computer-aided systems employ algorithms to design customized, image-based scaffolds with high external shape complexity and spatial patterning of internal architecture guided by topology optimization. 3D bioprinting and surface modification techniques further enhance scaffold functionalization and osteogenic potential through the incorporation of viable cells, bioactive molecules, biomimetic materials and vectors for transgene expression within the layered architecture. These computational design features enable fabrication of tissue engineering constructs with highly tailored mechanical, structural, and biochemical properties for bone. This review examines key properties of scaffold design, bioresorbable bone scaffolds produced by AM processes, and clinical applications of these regenerative technologies. AM is transforming the field of personalized dental medicine and has great potential to improve regenerative outcomes in patient care.
Objectives The primary aim of this study was to investigate the relationship between interproximal open contacts and peri‐implant disease. The secondary aim was to assess patient‐reported outcome measures in relation to contact status. Materials and methods A cross‐sectional study was performed on 61 patients with 142 implants adjacent to at least one natural tooth. Patients underwent a clinical examination to assess contact status and width, plaque index (PI), gingival index (GI), periodontal probing depths (PPD), and bleeding on probing (BoP). Radiographic marginal bone level was measured in vertical bitewings taken within one year. A diagnosis was given to each implant. Last, subjects completed a brief questionnaire. Rao‐scott chi‐squared tests and generalized estimating equations (GEE) models were used to compare outcomes between groups. Results Seventy‐seven (54.2%) implants were found to have ≥1 interproximal open contact. Sixty‐five (45.8%) implants had closed contacts only. Implants with interproximal open contacts were significantly associated with peri‐implant mucositis and peri‐implantitis (p = .003) and increased prevalence of peri‐implant disease (adjusted PR = 1.57; 95% CI: 1.09–2.27, p = .015). Open contact status was also associated with higher PPD (p = .045), PI scores (p = .036), and GI scores (p = .021). Open contact prevalence was 75.4% on the patient‐level and 54.2% on the implant‐level, involving the mesial surface of the implant restorations 68.5% of the time (p < .001). Conclusion Interproximal open contacts between implant restorations and adjacent natural teeth are a risk indicator for peri‐implant disease. Adequate contact between implant restorations and natural teeth may contribute to the health of peri‐implant tissues.
In recent years, dental education has experienced a general shift toward an increased technology presence in education delivery and learning.This research examines the student-perceived efficacy of a blended learning approach (mixture of online content and face-to-face instruction) in a predoctoral periodontics curriculum to teach a new periodontal classification scheme to dental students in clinical training.Methods: Participants were recruited from third-and fourth-year predoctoral periodontal classes at the University of Washington School of Dentistry. Students were administered a live lecture introducing the new classification system and given access to an online module with built in case quizzes and interactive activities. Upon completing the module, students were given a post-module survey to assess learning preferences, utilization of various learning methods, and studentperceived efficacy of blended learning. Results:In a study group of 69 predoctoral dental students, the online module was the most preferred (52.2% ranked first) and utilized learning method for students (p < 0.001). Over 80% of students agreed or strongly agreed that they enjoyed using it and found it more effective than traditional lecture alone. Traditional lecture was preferred by 31.9% of students, and no students ranked the assigned reading as their first choice of learning method (p < 0.001). Conclusions: Our findings demonstrate higher student preference, utilization, and self-perceived efficacy of blended learning as compared to traditional assigned readings and lectures -supporting blended learning as a promising educational approach for predoctoral dental education.
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