A 1-Year Parallel-Group Randomized Clinical Trial Comparing the Effectiveness of a Mandibular Complete Denture vs an Early Loaded Single-Implant Overdenture.

PURPOSE: To assess the effectiveness of converting a conventional mandibular denture (CMD) into a single-implant mandibular overdenture (SIMO). MATERIALS AND METHODS: Edentulous patients received a new CMD and were randomly assigned to the CMD or SIMO group. For SIMO patients, a midline early-loaded implant was inserted and incorporated into the CMD after 3 weeks. Patient satisfaction and oral health-related quality of life were assessed at baseline and up to 1 year. Regression models were constructed using Generalized Estimating Equation (GEE). RESULTS: After 12 months, 32 patients were assessed (CMD: n = 17; SIMO: n = 15). Significant improvement was observed for the SIMO group compared to baseline measures. CONCLUSIONS: SIMO may be considered an effective alternative for patients unsatisfied with their CMDs.

3D printing vs traditional workflow for the fabrication of mandibular implant overdentures: study protocol for a mixed-methods cross-over RCT.

BACKGROUND: Complete tooth loss is a significant global oral health issue, particularly impacting older individuals with lower socioeconomic status. Computer-assisted technologies enhance oral healthcare access by the elderly. Despite promising in vitro reports on digital denture materials, evidence from randomized clinical trials (RCTs) is lacking to verify their performance. This cross-over RCT will investigate whether 3D-printed implant-retained mandibular overdentures (IMO) are more satisfactory for edentulous seniors than those made through traditional methods. METHODS/DESIGN: We will recruit 26 completely edentulous participants (any sex/gender) based on the following eligibility criteria: age ≥ 60 years, no tooth extraction in the past 12 months, two implants in the lower jaw, and need for new dentures in both jaws. Each participant will receive two denture pairs, either manufactured by 3D printing or traditionally, to be worn in a random order. A timeline of 3 months with each denture pair will be considered for outcome assessment (total: 6 months). Patient satisfaction with dentures will be measured by the McGill Denture Satisfaction Questionnaire. We will evaluate other patient-reported outcomes (including oral health-related quality of life) as well as clinician-assessed quality and cost. At the end of the trial, participants will choose which denture pair they wish to keep and interviewed about their experiences with the 3D-printed IMO. The quantitative and qualitative data will be incorporated through an explanatory mixed-methods strategy. A final quantitative assessment will happen after 12 months with the preferred IMO to assess the long-term performance and maintenance needs. DISCUSSION: This mixed-methods RCT will explore patient experiences with 3D-printed IMOs, aiming to assess the potential for altering clinical practice and dental public health policies. Our results will inform policies by showing whether 3D printing offers comparable outcomes at lower costs, facilitating greater access to oral care for the elderly. TRIAL REGISTRATION: ClinicalTrials.gov, NCT06155630, Registered on 04 December 2023. https://classic. CLINICALTRIALS: gov/ct2/show/NCT06155630.

The Prevalence of Patient Aggression Toward Dental Students at a Canadian University Teaching Clinic.

BACKGROUND: Studies show concerning rates of occupational violence against oral health care workers, but few studies of this nature have been conducted on dental students in university clinics. METHODS: We surveyed 3rd-, 4th- and 5th-year dental students in the 2020-2021 academic year at the dental teaching clinic of the University of Montreal, using a 17-item self-report questionnaire exploring 4 types of aggression: physical, verbal, reputational and sexual. RESULTS: Of 239 students, 45 (19%) responded to the online questionnaire, and 28 (62% of respondents) reported some form of aggression in the previous year. Verbal aggression and sexual aggression were each reported by 21 (47%) students. No differences were found between rates of aggression based on ethnicity. Women (74%) reported higher rates of aggression than men (47%), although this difference did not reach statistical significance. Of the 6 students who said they speak a language other than French (the workplace language) at home, 5 (83%) reported experiencing sexual aggression. CONCLUSION: Most students surveyed reported experiencing some form of patient aggression in the past year. The most common forms of aggression were verbal and sexual. Women and students who speak a language other than French at home may be particularly vulnerable to patient aggression in the clinical setting. This study has implications for dental education and points to the need for training and new solutions to prevent and respond to patient aggression at university dental clinics.

A 1-year parallel-group randomized clinical trial comparing effectiveness of mandibular complete denture versus early loaded single-implant overdenture.

PURPOSE: To assess the effectiveness of converting a conventional mandibular denture (CMD) into a single-implant mandibular overdenture (SIMO). MATERIALS AND METHODS: Edentulous subjects received a new set of CMDs and were randomly assigned to CMD or SIMO groups. For SIMO patients, a midline, early loaded implant was placed and incorporated into the CMD after 3 weeks. Patient satisfaction and oral health-related quality of life were assessed at baseline and up to 1 year. Regression models were constructed using generalized estimating equations. RESULTS: After 12 months, 32 patients were assessed (CMD: n = 17; SIMO: n = 15). Significant improvement was observed for the SIMO group when compared to baseline measures. CONCLUSION: SIMO may be considered an effective alternative for patients unsatisfied with their CMDs.

Malocclusion traits and oral health-related quality of life in children with osteogenesis imperfecta: A cross-sectional study.

BACKGROUND: The incidence of malocclusion is higher among people with osteogenesis imperfecta (OI) than the general population, and treatment options are limited due to the weak structure of bones and teeth. Focusing on those malocclusion traits that might have a high impact on a patient's oral health-related quality of life (OHRQoL) is warranted. METHODS: A total of 138 children and adolescents with OI were examined for malocclusion traits. OHRQoL was measured using age-specific versions (8 through 10 years and 11 through 14 years) of the Child Perceptions Questionnaire (CPQ), considering the following domains: oral symptoms, functional limitation, emotional well-being, and social well-being. Higher scores implied worse OHRQoL. Multivariable ordinal logistic regression was used to estimate the association between malocclusion traits and OHRQoL. RESULTS: Among children aged 8 through 10 years (n = 56), the CPQ and its constituent domain scores were relatively similar between those with malocclusion (higher scores) and those without. In the adolescent (n = 82) group aged 11 through 14 years; however, those with posterior crossbite (odds ratio, 5.01; 95% confidence interval, 1.40 to 12.41) or open bite (odds ratio, 3.21; 95% confidence interval, 1.21 to 10.23) experienced statistically significantly higher degrees of functional limitations (a higher functional limitation score) than those without. CONCLUSIONS: Adolescents with OI and posterior open bites or crossbites have substantial self-reported functional limitations and worse oral symptoms, which warrants additional investigation and therapeutic trials in an attempt to improve the malocclusion. In addition, the authors found that the CPQ can be a useful tool in a clinical trial of orthodontic interventions in OI.

A scoping review on social justice education in current undergraduate dental curricula.

BACKGROUND: A recent shift in educational components within healthcare has pushed dentistry toward a greater understanding of the role of social components on oral health. There has also been an increased awareness of inappropriate conduct among dental students. STUDY DESIGN AND METHODS: A scoping review was conducted to determine if, how, and when social-justice-oriented education has been incorporated into dental curricula worldwide. A systematic and reiterative search of articles was performed on February 22, 2018, and combined quantitative and qualitative synthesis of data. An updated search was done on September 26, 2019. PRIMARY RESULTS: Seventy-three studies were evaluated: 46 quantitative (63%), 24 qualitative (33%), 3 multimethods (4%). The majority used self-reported surveys and questionnaires (66%), while the remaining used interviews (9.5%), student reflections (16%) and focus groups (5.5%). Studies included dental students only (78%); dental students with dental hygiene students (5.5%) or faculty/staff (4.1%); dental students in year 1 (17%), year 2 (1.6%), year 3 (1.6%), year 4 (14.2%); first- and second-year students (3%); third- and fourth-year students (1.6%); all years of study (20%); and academic year not specified (41%). The study areas included "learning in dental school," "experiencing dental school," "focusing on cultural competency," and "addressing dental ethics and social responsibility." PRINCIPAL CONCLUSIONS: Three major research gaps were identified: no discussion of a social contract between dentists and society, no explicit social justice-oriented topics within undergraduate dental curricula, and no standardized tool to measure these topics. Further research is necessary to understand how such topics can be included in dental curricula to form socially competent dentists.

Oral healthcare experiences of humanitarian migrants in Montreal, Canada.

OBJECTIVE: To understand the oral healthcare experiences of humanitarian migrants in Montreal and their perceptions of ways to improve access to oral healthcare. METHODS: We used focused ethnography informed by a public health model of the dental care process. The adapted McGill Illness Narrative Interview (MINI) guided interviews of a purposeful sample of humanitarian migrants who received or needed dental care in Montreal. Each interview (50-60 min) was audio-recorded for verbatim transcription. Observation of dental care episodes occurred during mobile dental clinics in underserved communities over the same period (2015-2016). Data analysis combined deductive codes from the theoretical frameworks and inductive codes from interview transcripts and field notes to inform themes. RESULTS: We interviewed 25 participants (13 refugees and 12 asylum seekers) from 10 countries, who had been in Canada for a range of 1 month to 5 years. The dental care experiences of participants included delayed consultation, proximity to dental clinics, quality care, limited treatment choices, high cost, and long waiting times. A more inclusive healthcare policy, lower fees, integration of dental care into public insurance, and creation of community dental clinics were proposed strategies to improve access to dental care. CONCLUSION: Humanitarian migrants in this study experienced inadequate oral healthcare. Their lived experiences help us to identify gaps in the provision of oral healthcare services, and suggestions of participants have great potential to improve access to oral healthcare.

Caries prevalence and experience in individuals with osteogenesis imperfecta: A cross-sectional multicenter study.

OBJECTIVE: Dentinogenesis Imperfecta (DI) forms a group of dental abnormalities frequently found associated with Osteogenesis Imperfecta (OI), a hereditary disease characterized by bone fragility. The objectives of this study were to quantify the dental caries prevalence and experience among different OI-types in the sample population and quantify how much these values change for the subset with DI. METHODS: To determine which clinical characteristics were associated with increased Caries Prevalence and Experience (CPE) in patients with OI, the adjusted DFT scores were used to account for frequent hypodontia, impacted teeth and retained teeth in OI population. For each variable measured, frequency distributions, means, proportions and standard deviations were generated. Groups means were analyzed by the unpaired t-test or ANOVA as appropriate. For multivariate analysis, subjects with caries experience of zero were compared with those with caries experience greater than zero using logistic regression. RESULTS: The stepwise regression analysis while controlling for all other variables demonstrated the presence of DI (OR 2.43; CI 1.37-4.32; P = 0.002) as the significant independent predictor of CPE in the final model. CONCLUSION: This study found no evidence that CPE of OI subjects differs between the types of OI. The presence of DI when controlled for other factors was found to be the significant predictor of CPE.

Oral health-related quality of life in children and adolescents with osteogenesis imperfecta: cross-sectional study.

BACKGROUND: Osteogenesis imperfecta (OI) affects dental and craniofacial development and may therefore impair Oral Health-Related Quality of Life (OHRQoL). However, little is known about OHRQoL in children and adolescents with OI. The aim of this study was to explore the influence of OI severity on oral health-related quality of life in children and adolescents. METHODS: Children and adolescents aged 8-14 years were recruited in the context of a multicenter longitudinal study (Brittle Bone Disease Consortium) that enrolls individuals with OI in 10 centers across North America. OHRQoL was assessed using the Child Perceptions Questionnaire (CPQ) versions for 8 to 10-year-olds (CPQ8-10) and for 11 to 14-year-olds (CPQ11-14). RESULTS: A total of 138 children and adolescents (62% girls) diagnosed with OI types I, III, IV, V and VI (n = 65, 30, 37, 4 and 2, respectively) participated in the study. CPQ8-10 scores were similar between OI types in children aged 8 to 10 years. In the 11 to 14-year-old group, CPQ11-14-scores were significantly higher (i.e. worse) for OI types III (24.7 [SD 12.5]) and IV (23.1 [SD 14.8]) than for OI type I (16.5 [SD 12.8]) (P < 0.05). The difference between OI types was due to the association between OI types and the functional limitations domain, as OI types III and IV were associated with significantly higher grade of functional limitations compared to OI type I. CONCLUSION: The severity of OI impacts OHRQoL in adolescents aged 11 to 14 years, but not in children age 8 to 10 years.

Effectiveness of immediately loaded single-implant mandibular overdentures versus mandibular complete dentures: A 1-year follow-up of a randomized clinical trial.

OBJECTIVE: This randomized clinical trial (RCT) aimed to assess the 1-year effectiveness of single-implant mandibular overdentures (SIMO) compared to conventional complete dentures (CCD). METHODS: In the first phase of the study, participants received new maxillary and mandibular CCDs. Then, they were randomly allocated to one of the study groups (CCD or SIMO). Participants in SIMO group received an external hexagon implant in the mandibular midline, with the immediate connection of an O-Ring/ball attachment. Oral health-related quality of life (OHIP-EDENT) and patient satisfaction in both groups were assessed before allocation and at 6- and 12-month follow-up visits. Both intention-to-treat (ITT) and per-protocol approaches were used for analyses. Statistical analyses were performed using the Wilcoxon Signed Ranks test and the Generalized Estimating Equations. RESULTS: Eighty-four participants (CCD n = 42; SIMO n = 42) were included, out of which 70 completed the 12-month follow-up (CCD n = 34; SIMO n = 36). ITT analysis showed no changes for the CCD group in the longitudinal assessment compared to baseline. Participants in SIMO group had a significant improvement in OHIP-EDENT scores and satisfaction with the mandibular denture. No changes for the maxillary denture were observed in either groups. Similar results were found when per-protocol analysis was performed. CONCLUSIONS: SIMO treatment resulted in a significant improvement in patient perceived outcomes compared to the CCD. SIMO may be considered as an alternative treatment modality for patients with poorly adapted and/or unstable mandibular dentures (ClinicalTrials.gov NCT03463174). CLINICAL RELEVANCE: The immediately loaded single-implant mandibular overdenture markedly improved patient satisfaction and oral health-related quality of life of conventional denture wearers after a 12-month follow-up.

Assessing Dental Students' Readiness to Treat Populations That Are Underserved: A Scoping Review.

In North America, all dental schools have adopted some form of community-based dental education (CBDE) or service-learning, but little is known about the areas being researched and reported in published studies. The aim of this study was to conduct a scoping review to determine what areas of research had been conducted to determine the effects of CBDE on dental students' readiness to treat populations that are underserved. A systematic search of articles published in English or French since 2000 was performed on July 29, 2015, and combined quantitative and qualitative synthesis of data was conducted. Of the 32 studies evaluated, 23 (72%) were quantitative, seven (22%) were qualitative, and two were multi-method. The majority (66%) used self-report methods, most frequently surveys. Participants in 50% of the studies were fourth-year dental students; the others assessed third- and fourth-year (13%), first- and second-year (6%), and first-year (13%) students. Dentists were the participants in three studies (9%), with dentists and students in one study (3%). Either the types of populations receiving care were unspecified or four or more groups were pooled together in 25 studies (78%), while two focused on children, one on rural populations, one on elderly populations, two on persons with special health care needs, and one on low-income populations. The study areas were wide-ranging, but generally fell into three categories: student performance (37.5%), teaching approaches and evaluation methods (37.5%), and perceptions of CBDE (25%). This review identified many research gaps for determining whether students are prepared to treat populations that are underserved. The disparate nature of CBDE research demonstrates a compelling argument for determining elements that define student readiness to care for patients who are underserved and for research that includes the voices of patients, curriculum development, and more comprehensive and rigorous evaluation methodologies.

Single-implant overdentures retained by the Novaloc attachment system: study protocol for a mixed-methods randomized cross-over trial.

BACKGROUND: Overdentures retained by a single implant in the midline have arisen as a minimal implant treatment for edentulous mandibles. The success of this treatment depends on the performance of a single stud attachment that is susceptible to wear-related retention loss. Recently developed biomaterials used in attachments may result in better performance of the overdentures, offering minimal retention loss and greater patient satisfaction. These biomaterials include resistant polymeric matrixes and amorphous diamond-like carbon applied on metallic components. The objective of this explanatory mixed-methods study is to compare Novaloc, a novel attachment system with such characteristics, to a traditional alternative for single implants in the mandible of edentate elderly patients. METHODS/DESIGN: We will carry out a randomized cross-over clinical trial comparing Novaloc attachments to Locators for single-implant mandibular overdentures in edentate elderly individuals. Participants will be followed for three months with each attachment type; patient-based, clinical, and economic outcomes will be gathered. A sample of 26 participants is estimated to be required to detect clinically relevant differences in terms of the primary outcome (patient ratings of general satisfaction). Participants will choose which attachment they wish to keep, then be interviewed about their experiences and preferences with a single implant prosthesis and with the two attachments. Data from the quantitative and qualitative assessments will be integrated through a mixed-methods explanatory strategy. A last quantitative assessment will take place after 12 months with the preferred attachment; this latter assessment will enable measurement of the attachments' long-term wear and maintenance requirements. DISCUSSION: Our results will lead to evidence-based recommendations regarding these systems, guiding providers and patients when making decisions on which attachment systems and implant numbers will be most appropriate for individual cases. The recommendation of a specific attachment for elderly edentulous patients may combine positive outcomes from patient perspectives with low cost, good maintenance, and minimal invasiveness. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03126942 . Registered on 13 April 2017.

From theoretical concepts to policies and applied programmes: the landscape of integration of oral health in primary care.

BACKGROUND: Despite its importance, the integration of oral health into primary care is still an emerging practice in the field of health care services. This scoping review aims to map the literature and provide a summary on the conceptual frameworks, policies and programs related to this concept. METHODS: Using the Levac et al. six-stage framework, we performed a systematic search of electronic databases, organizational websites and grey literature from 1978 to April 2016. All relevant original publications with a focus on the integration of oral health into primary care were retrieved. Content analyses were performed to synthesize the results. RESULTS: From a total of 1619 citations, 67 publications were included in the review. Two conceptual frameworks were identified. Policies regarding oral heath integration into primary care were mostly oriented toward common risk factors approach and care coordination processes. In general, oral health integrated care programs were designed in the public health sector and based on partnerships with various private and public health organizations, governmental bodies and academic institutions. These programmes used various strategies to empower oral health integrated care, including building interdisciplinary networks, training non-dental care providers, oral health champion modelling, enabling care linkages and care coordinated process, as well as the use of e-health technologies. The majority of studies on the programs outcomes were descriptive in nature without reporting long-term outcomes. CONCLUSIONS: This scoping review provided a comprehensive overview on the concept of integration of oral health in primary care. The findings identified major gaps in reported programs outcomes mainly because of the lack of related research. However, the results could be considered as a first step in the development of health care policies that support collaborative practices and patient-centred care in the field of primary care sector.

A meta-analysis of retention systems for implant-supported prostheses in partially edentulous jaws.

STATEMENT OF PROBLEM: Choosing an appropriate retention system for patients with partial edentulism and dental implants is impeded by a paucity of evidence. The available evidence is extrapolated from either completely edentulous or mixed study populations. PURPOSE: The purpose of this systematic review was to assess the effects of different retention systems used for implant-supported prostheses in patients with partially edentulous jaws by measuring the rates of failure, survival, and event-free situations. MATERIAL AND METHODS: An electronic database search supplemented by a manual search was conducted to identify the best, good, and fair quality studies reporting at least 10 participants with a 1-year follow-up (PROSPERO-CRD 42015024649). Summary estimates of the survival, failure, and event-free proportions were obtained using a random effects model with a 95% confidence interval. RESULTS: Among the 896 citations from 3875 titles identified by the search, 104 studies reporting over 5317 participants with 9568 reconstructions and a total exposure time of 46553.18 years were included in the analysis. Screw-retained single crowns showed twofold minor complication even rates (8.5%; 95% confidence interval [CI]: 5.5-12.9) compared with cement-retained single crowns (4.2%. 95% CI; 3.2-5.4). None of the retention systems were more advantageous than the others in relation to failure and event-free outcomes. However, the summary of the findings suggests that cement-retained single crowns, splinted crowns, and cantilever-fixed partial dentures performed better (with fewer events) than screw-retained restorations in the long term. CONCLUSIONS: Results suggest that cement retention may be an appropriate system for implant-supported restorations in partial edentulism. However, high-quality prospective studies and cost evaluation are recommended to confirm the evidence.

Five Things to Know About Peri-Implant Mucositis and Peri-Implantitis.

This brief manuscript is part of an educational evidence-based series intending to inform clinicians on most recent clinical findings. This article addresses five frequent questions on peri-implant mucositis and peri-implantitis while considering its epidemiology, diagnosis, etiology and management.

Clinical guidelines and procedures for provision of mandibular overdentures on 4 mini-dental implants.

This article describes the flapless placement of mini-dental implants (MDI) to retain mandibular overdentures. Clinical inclusion/exclusion criteria and clinical protocols for the flapless placement of MDIs and for retrofitting the overdenture are presented. A minimum bone height of 13 mm and a minimal flap are recommended. After drilling, the 4 implants are placed with a self-tapping process. A minimum of 15 Ncm of resistance upon final insertion indicates that immediate loading can be performed. The metal housings with O-rings are incorporated into the prosthesis using autopolymerizing resin. The technique and protocol for immediately loaded 4-mini-implant mandibular overdentures is minimally invasive and cost effective.

Should PGY-1 Be Mandatory in Dental Education? Two Viewpoints: Viewpoint 1: PGY-1 Provides Benefits That Support Making It Mandatory and Viewpoint 2: PGY-1 Should Be Available for Dental Graduates But Not Mandatory.

This Point/Counterpoint considers whether a general dentistry postgraduate year one (PGY-1) residency should be required for all new graduates who do not pursue specialty training. Currently, New York and Delaware require PGY-1 for dental licensure, while other states offer it as an alternative to a clinical examination for obtaining licensure. Viewpoint 1 supports the position that PGY-1 should be mandatory by presenting evidence that PGY-1 residencies fulfill new graduates' need for additional clinical training, enhance their professionalism and practice management skills, and improve access to care. The authors also discuss two barriers-the limited number of postdoctoral positions and the high cost-and suggest ways to overcome them. In contrast, Viewpoint 2 opposes mandatory PGY-1 training. While these authors consider the same core concepts as Viewpoint 1 (education and access to care), they present alternative methods for addressing perceived educational shortcomings in predoctoral curricula. They also examine the competing needs of underserved populations and residents and the resulting impact on access to care, and they discuss the potential conflict of interest associated with asking PGY-1 program directors to assess their residents' competence for licensure.

Cost-effectiveness analysis of the single-implant mandibular overdenture versus conventional complete denture: study protocol for a randomized controlled trial.

BACKGROUND: Preliminary clinical studies on the single-implant mandibular overdenture (SIMO) have reported favorable results as an alternative to the conventional complete dentures for rehabilitation of the edentulous mandible. Clinical and patient-reported outcomes were assessed but no evidence is available with respect to the cost-effectiveness of this treatment, which is particularly important to test whether the incremental cost associated with the implant treatment is justified facing the benefits from the intervention. Thus, the aim of this study is to assess the cost-effectiveness of single-implant mandibular overdentures. METHODS/DESIGN: This randomized clinical trial will include edentulous individuals who meet eligibility criteria. Participants will be randomized into one of the treatment groups: a conventional complete denture group or a single-implant mandibular overdenture group. Direct costs related to therapies in both groups will be identified, measured and valuated for 1 year after treatment. Oral health-related quality of life and satisfaction with the dentures will be the primary outcome variables. Incremental cost-effectiveness ratios will be estimated and graphically presented on cost-effectiveness planes. A Markov decision tree will be constructed to set out the consequences of the competing alternatives. Sensitivity analysis on the most important assumptions will be performed in order to assess the robustness of the model. DISCUSSION: This is the first trial-based cost-effectiveness study on single-implant mandibular overdentures. Specific challenges in designing the protocol are considered. The expected results are of high clinical relevance and may contribute to the decision-making process when choosing between different alternatives for the rehabilitation of the edentulous mandible. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02710357 , registered on 11 March 2016.