Discordance between presumed standard of care and actual clinical practice: the example of rubber dam use during root canal treatment in the National Dental Practice-Based Research Network

Ingestion and surgical retrieval of an endodontic file: a case report

Ingestions and aspirations of foreign bodies are rare, but do occasionally occur during dental treatment. Although reports exist, few include photos demonstrating the extensive surgical intervention that may be necessary to manage such events. Perhaps this lack of visualization, and associated lack of awareness, is one of the reasons some clinicians still provide non-surgical root canal therapy (NSRCT) without a rubber dam. This case report outlines the medical treatment of a 30-year-old male who initially presented to a general dentist's office (not associated with the authors) for NSRCT of their mandibular right first molar. A rubber dam was not used for this procedure, during which the accidental ingestion of an endodontic K-file occurred. The patient was subsequently hospitalized for evaluation and treatment, consisting of numerous imaging studies, endoscopic evaluation, and surgical removal of the file from his small intestine. The ingestion of foreign bodies, and the associated complications, can be reduced through the routine use of a rubber dam, which is considered the standard of care for NSRCT. This case graphically illustrates the potential consequences associated with deviating from the standard of care and should remind clinicians that a rubber dam is necessary for all cases of NSRCT.

Patients' comfort with and receipt of health risk assessments during routine dental visits: Results from the South Atlantic region of the US National Dental Practice-Based Research Network

OBJECTIVES

To understand patients' comfort with health risk assessments (HRAs) and patient and dentist factors associated with the provision of HRAs.

METHODS

In this cross-sectional study, 857 patients seen by 30 dental practitioners in the United States National Dental Practice-Based Research Network reported their comfort receiving HRA for six risk factors (tobacco use, alcohol use, dietary sugar intake, human immunodeficiency virus risks, human papillomavirus risks and existing medical conditions) and whether they discussed any of the risk factors during their visits. Multi-level logistic models were used to examine the impacts of patient, practitioner, practice characteristics on the (1) number of risk factors patients were comfortable discussing and (2) number of risk factors assessed in the current dental visit.

RESULTS

Only a small percentage (4%) of patients reported being uncomfortable receiving any HRA during their dental visits. However, over half of the patients (53%) reported that they did not receive any HRAs during the current visit. In the regression analyses, patients who were older, male and from the suburban were more likely to be comfortable with more HRAs. Dentists were more likely to provide HRA if they were younger, not non-Hispanic white, less likely to feel that providing HRAs was beyond their scope of practice, yet more likely to feel occasional discomfort in providing HRA.

CONCLUSIONS

Interventions should focus on reducing dental practitioner perception that conducting HRAs is beyond their scope of practice and standardizing screening assessments for multiple risk factors.

Deep caries removal strategies: Findings from The National Dental Practice-Based Research Network

BACKGROUND

The International Caries Consensus Collaboration (ICCC) has published recommendations on carious tissue removal to treat cavitated carious lesions in a manner that preserves hard tissue and retains teeth long term. This study quantifies The National Dental Practice-Based Research Network dentists' use of selective caries removal.

METHODS

This cross-sectional questionnaire study assessed reported use of selective caries removal when treating deep caries in asymptomatic and symptomatic teeth in response to clinical case scenarios. Statistical methods included the proportion of respondents concordant with ICCC guidelines at various thresholds and logistic regression to model factors associated with concordance.

RESULTS

A total of 500 dentists responded. The study sample was 57% male, mean (SD) age was 50.9 (12.6) years, and 60% worked in private practice settings. Higher levels of concordance for choosing selective caries removal 50% or greater of the time were found for asymptomatic (62.4%; 95% CI, 57.6 to 67.2) than for symptomatic caries (49.3%; 95% CI, 44.4 to 54.2). These differences were significantly associated with type of practice setting.

CONCLUSIONS

The National Dental Practice-Based Research Network dentists reported using selective caries removal strategies when managing deep carious lesions more often than in previous US and Japanese practice-based research network studies and from results of a systematic review and meta-analysis. Nonetheless, substantive discordance with the ICCC guidelines was seen by the authors of this study.

PRACTICAL IMPLICATIONS

More dissemination and continuing education activities, as well as implementation studies, may further encourage use of selective caries removal to soft or firm dentin when indicated.

Compliance with Key Practices of Root Canal Treatment Varies by the Reward System Applied in Public Dental Services

INTRODUCTION

To assess clinical practices in root canal treatments (RCTs) performed by general dental practitioners under 2 different reward schemes applied in public dental services.

METHODS

This study used a retrospective design with tooth as the observation unit. The data included all teeth (n = 547) with nonsurgical primary RCT completed in 2016. Electronic documents included treatment details and radiographs. RCT assessment covered 4 key items: taking pre- and postoperative radiographs, using a rubber dam, measuring working length. Assessed dichotomies indicated whether practices were adequate. Dentists' reward schemes were "salaried" and "fee-for-service." Chi squared tests analyzed frequency differences.

RESULTS

RCTs formed 2 groups by the reward scheme: 305 RCTs were performed by salaried dentists and 242 by fee-for-service dentists. Preoperative radiographs were diagnosable for 76.1% and postoperative radiographs, for 95.1% of all RCTs. Rubber dam use was documented for 28.9% of the RCTs, more frequently when performed by salaried than by fee-for-service dentists (43.9% vs 9.9%, P < .001). Working length measurement was documented for 72.9% of the RCTs, more frequently for RCTs performed by salaried than by fee-for-service dentists (85.2% vs 57.4%, P < .001). All 4 key items were assessed as adequate in 19.0% of all RCTs, more frequently when performed by salaried than by fee-for-service dentists (29.5% vs 5.8%, P < .001).

CONCLUSIONS

Deficiencies in RCTs, particularly underuse of rubber dams call for further research to understand the reasons for noncompliance with good clinical practice guidelines.

Association between predoctoral evidence-based practice training and later use of peer-reviewed journals: National dental PBRN

OBJECTIVE

We examined whether evidence-based practice (EBP) during dental school was associated with the increased use of peer-reviewed literature during subsequent clinical practice for National Dental Practice-Based Research Network (PBRN) dentists. We also sought to understand whether this association was moderated by being a dental specialist.

METHODS

We analyzed cross-sectional data from 1228 dentists participating in the PBRN. We used logistic regression to examine the association between self-reported EBP training during dental school and the use of peer-reviewed journals in clinical practice, controlling for the number of years since dental school graduation and dental practice type. We stratified the data by dental specialists and examined effect modification using the Breslow-Day test for homogeneity of the odds ratio.

RESULTS

The prevalence of peer-reviewed journal use by PBRN dentists in clinical practice was 87% (n = 1070) with no statistical evidence of effect modification by dental specialists on the EBP peer-reviewed journal use relationship (p > 0.05). After controlling for years since dental school graduation and dental practice type, dentists who self-reported EBP training during dental school had greater odds of using peer-reviewed journals in clinical practice than dentists who did not self-report EBP training during dental school (OR, 1.47; 95%CI = 1.01, 2.15).

CONCLUSION

The use of peer-reviewed published literature by PBRN dentists who had EBP predoctoral training is one important step in the EBP process by which practicing dentists can implement evidence-based findings, interventions, and policies into routine health care and public health settings. These findings add to the body of support for EBP curricula in dental education.

Infection Control Practices Among Private Practicing Dentists in Nairobi During the Pre-coronavirus Disease 2019 Period

Background: Cross-infection control is a dynamic field that requires frequent updates due to emerging diseases, advancement in technology, and scientific knowledge. Despite wide publication of guidelines, a laxity in compliance to the standard precautions for infection control by dental health-care personnel (DHCP) has been reported globally. Therefore, there is need to review previous shortcomings in order to adequately secure dental practices during the coronavirus disease 2019 (COVID-19) pandemic. The aim of the study was to determine knowledge and infection control practices by dentists in private practices. The study was done a few months before the first COVID-19 case was confirmed in Kenya. Materials and Methods: The study design was a descriptive cross-sectional study that was carried out in selected private dental clinics located in Nairobi. Data were collected using an interviewer-administered questionnaire. Convenience sampling method was utilized, while data were analyzed using SPSS 20.0.0.0. Results: A total of 71 private dentists participated in the study. Their mean age was 38 years with an age range of 27-55 years. Almost all (70, 98.6%) the dentists were able to define cross infection correctly. Majority (62, 87.3%) correctly differentiated between sterilization and disinfection, while 9 (12.7%) had difficulties. Most (68, 95.8%) of the respondents were aware of the standard precautions for cross-infection control. All participants used face masks and gloves. About half of them (38, 54%) practiced hand washing after removal of gloves and 31 (43.7%) before and after wearing of gloves, while 2 (2.8%) washed hands only before wearing gloves. Only 31 (42.3%) and 26 (36.6%) participants reported use of rubber dam isolation and impervious barrier, respectively. All the dentists reported disposal of sharps into especially labeled containers, while about half reported use of disposable suction traps and amalgam separators. Conclusion: The dentists had a good knowledge on various aspects of infection control measures that were studied. Use of basic personal protective equipment was widely practiced. There were irregularities in hand hygiene, use of rubber dam, surface barriers, and waste management. The work highlights that many dentists were unprepared to manage infectious risk during the COVID-19 outbreak, which justified the closure of the dental facilities. Development of strategies to promote adequate and safe practice is highly recommended.

Dental practitioners' use of health risk assessments for a variety of health conditions: Results from the South Atlantic region of The National Dental Practice-Based Research Network

BACKGROUND

An important step in integrating dental and medical care is improving understanding of the frequency and characteristics of dental practitioners who conduct health risk assessments (HRAs).

METHODS

From September 2017 through July 2018, active dentist and hygienist members of the South Atlantic region of The National Dental Practice-Based Research Network (N = 870) were invited to participate in a survey evaluating their HRA practices (screening, measuring, discussing, referring patients) for 6 health conditions (obesity, hypertension, sexual activities, diabetes, alcohol use, tobacco use). For each health condition, the authors used ordinal logistic regression to measure the associations among the practitioner's HRA practices and the practitioner's characteristics, barriers, and practice characteristics.

RESULTS

Most of the 475 responding practitioners (≥ 72%) reported they at least occasionally complete 1 or more HRA steps for the health conditions except sexual activities. Most practitioners screened (that is, asked about) and gave referral information to affected patients for diabetes (56%) and hypertension (63%). Factors associated with each increased HRA practice for 2 or more outcomes were non-Hispanic white compared with Hispanic practitioner (cumulative odds ratio [COR] obesity, 0.4; 95% confidence interval [CI], 0.2 to 0.8; and COR diabetes, 0.3; 95% CI 0.2 to 0.8), male compared with female practitioner (COR tobacco, 0.3; 95% CI, 0.2 to 0.7; and COR hypertension, 0.4; 95% CI 0.2 to 0.8), and practitioner discomfort (COR, obesity and alcohol use, 0.7; 95% CI, 0.6 to 0.9; and COR, sexual activities 0.6; 95% CI 0.5 to 0.8).

CONCLUSIONS AND PRACTICAL IMPLICATIONS

Dental practitioners are conducting HRA practices for multiple conditions. Interventions should focus on reducing practitioner discomfort and target non-Hispanic white, male practitioners.

Prophylactic antibiotic prescribing in dental practice: Findings from a National Dental Practice-Based Research Network questionnaire

BACKGROUND

Little is known about antibiotic prescribing practices of dentists. The objective of this study was to gain a better understanding of dentists' beliefs and behaviors regarding the use of antibiotic prophylaxis (AP) before invasive dental procedures.

METHODS

A multidisciplinary team developed and disseminated a questionnaire to 3,584 dentist members of the National Dental Practice-Based Research Network.

RESULTS

Overall, 2,169 network dentists (61%) responded. Respondents saw patients at risk of developing infective endocarditis (IE) and prosthetic joint infection (PJI) at least once per week (35% and 65%, respectively). Although 78% of dentists agreed that the 2007 American Heart Association guidelines for the prevention of IE are well-defined and clear, only 49% agreed concerning PJI guidelines. Differences for the IE and PJI patient populations also existed for questions regarding dentists' understanding of the specific patient groups at risk, the recommended antibiotic regimens, and the need to consult with a patient's cardiologist or orthopedic surgeon.

CONCLUSIONS

The survey results indicate that decision making regarding the use of AP occurs frequently among dentists. Moreover, dentists reported uncertainty about the appropriate use of AP as defined by both IE and PJI guidelines, which may have resulted in a lack of concordance between dentists' beliefs and their practice behaviors.

PRACTICAL IMPLICATIONS

The results reported by the authors highlight the need to develop better educational programs that address antimicrobial stewardship in AP for patients at risk of developing IE and PJI and target the dental profession.

Practitioner Engagement in Activities of the National Dental Practice-Based Research Network (PBRN): 7-Year Results

PURPOSE

To 1) quantify practitioner activities of the National Dental Practice-Based Research Network (Network) for which Continuing Education (CE) credits were received (study training, videos, webinars, meetings, and symposia); 2) quantify practitioner coauthoring Network publications and presentations; and 3) test whether practitioner characteristics were associated with participation in these activities.

METHODS

A retrospective analysis of 4361 practitioners who enrolled in the Network between April 12, 2012 and October 12, 2018.

RESULTS

Overall, 59% (n = 2586) of practitioners earned CE credit from the Network; among these, 68% (n = 1757) from a video, 38% (n = 993) attended an annual Network meeting, 31% (n = 798) due to training for a Network clinical study, 9% (n = 226) attended a national symposium, and 7% (n = 170) participated in a Network webinar. Members of 2 large group practices earned on average more CEs than practitioners from other practice settings. Four percent (n = 159) of practitioners coauthored a Network presentation or publication. Practitioners who received their dental degree before 2000, were general practitioners, or were members of 2 large group practices, were more likely to have coauthored a publication or presentation.

CONCLUSION

This Network used a broad range of activities to engage community practitioners. These activities were successful in sustaining a high level of practitioner engagement in clinical research and its relevance to everyday clinical practice.

Implementation science and periodontal practice: Translation of evidence into periodontology

The advent of evidence-based practice in the 1990s led to the development of processes and resources to support the use of high-quality research in the provision of health care. As the evidence-based approach to health care continues to evolve, it has become apparent that mere creation and access to scientific knowledge is not sufficient to facilitate its routine adoption in health care. Throughout any health care system, there are inherent barriers preventing the adoption and routine use of new evidence in patient care. These barriers include provider-level factors, such as knowledge and access to new evidence, as well as each provider's attitudes and beliefs around adopting and applying the evidence with their patients. Importantly, there are also health care system-level barriers that, even among willing providers, prevent the easy adoption of new evidence and routine application in patient care. In addition to barriers, there are facilitators that help promote adoption of evidence into practice. Understanding and addressing barriers and facilitators to promote adoption of evidence into practice has led to the growth of a new field known as implementation science. Successful application of implementation science in all areas of health care, including periodontology, will help bridge the gap between what are known from clinical research to be effective treatments and what treatments should be applied routinely in clinical practice. This article reviews key concepts in implementation science and how its application in periodontology can facilitate the translation of high-quality evidence into routine periodontal practice and improved patient outcomes.

The Impact of COVID-19 Related Lockdown on Dental Practice in Central Italy-Outcomes of A Survey

The COVID-19 pandemic has affected lives and professions worldwide. We aimed to determine the behavior of dentists during the lockdown in Central Italy through an online survey. We demonstrated that the most frequent of urgencies, not otherwise manageable through telemedicine, was dental pulp inflammation. Although a statistically significant increase in the use of some of the personal protective equipment (PPE) from pre to during lockdown was shown, dentists were afraid of being infected during the dental procedures. Moreover, we showed that digital dentistry, telemedicine, use of the rubber dam, distancing of the appointments and further structural changes at the dental office are necessary to reduce the contagion among dentists and patients. No significant differences were shown between gender.

Leveraging Electronic Dental Record Data for Clinical Research in the National Dental PBRN Practices

OBJECTIVES

The aim of this study is to determine the feasibility of conducting clinical research using electronic dental record (EDR) data from U.S. solo and small-group general dental practices in the National Dental Practice-Based Research Network (network) and evaluate the data completeness and correctness before performing survival analyses of root canal treatment (RCT) and posterior composite restorations (PCR).

METHODS

Ninety-nine network general dentistry practices that used Dentrix or EagleSoft EDR shared de-identified data of patients who received PCR and/or RCT on permanent teeth through October 31, 2015. We evaluated the data completeness and correctness, summarized practice, and patient characteristics and summarized the two treatments by tooth type and arch location.

RESULTS

Eighty-two percent of practitioners were male, with a mean age of 49 and 22.4 years of clinical experience. The final dataset comprised 217,887 patients and 11,289,594 observations, with the observation period ranging from 0 to 37 years. Most patients (73%) were 18 to 64 years old; 56% were female. The data were nearly 100% complete. Eight percent of observations had incorrect data, such as incorrect tooth number or surface, primary teeth, supernumerary teeth, and tooth ranges, indicating multitooth procedures instead of PCR or RCT. Seventy-three percent of patients had dental insurance information; 27% lacked any insurance information. While gender was documented for all patients, race/ethnicity was missing in the dataset.

CONCLUSION

This study established the feasibility of using EDR data integrated from multiple distinct solo and small-group network practices for longitudinal studies to assess treatment outcomes. The results laid the groundwork for a learning health system that enables practitioners to learn about their patients' outcomes by using data from their own practice.

Laboratory Technician Assessment of the Quality of Single-Unit Crown Preparations and Impressions as Predictors of the Clinical Acceptability of Crowns as Determined by the Treating Dentist: Findings from the National Dental Practice-Based Research Network

PURPOSE

In-laboratory assessment by laboratory technicians may offer insight to increase clinical success of dental crowns, and research in this area is lacking.

MATERIALS AND METHODS

Dentists in the National Dental Practice-Based Research Network enrolled patients in a study about single-unit crowns; laboratory technicians evaluated the quality of tooth preparations and impressions. The primary outcome for each crown was clinical acceptability (CAC), as judged by the treating dentist. A secondary outcome was "Goodness of Fit (GOF)," a composite score of several aspects of clinical fit, also judged by the study dentist. A mixed-effects logistic regression was used to analyze associations between laboratory technician ratings and the CAC and GOF.

RESULTS

Dentists (n = 205) evaluated 3731 crowns. Technicians ranked the marginal detail of impressions as good or excellent in 92% of cases; other aspects of the impression were ranked good or excellent 88% of the time. Regarding tooth preparation, about 90% of preparations were considered adequate (neither excessive nor inadequate reduction). Factors associated with higher CAC were more preparation taper, and use of optical imaging. Factors associated with better GOF were higher impression quality, greater occlusal reduction, more preparation taper, and optical imaging.

CONCLUSIONS

Overall quality of preparations and impressions was very high, as evaluated by laboratory technicians. Several clinical parameters were associated with higher CAC and GOF. Clinicians who struggle with crown remakes might consider less conservative tooth preparation, as well as using digital impression technology.

Clinical acceptance of single-unit crowns and its association with impression and tissue displacement techniques: Findings from the National Dental Practice-Based Research Network

STATEMENT OF PROBLEM

The definitive impression for a single-unit crown involves many material and technique factors that may affect the success of the crown.

PURPOSE

The purpose of this prospective cohort study was to determine whether impression technique (tray selection), impression material, or tissue displacement technique are associated with the clinical acceptability of the crown (CAC).

MATERIAL AND METHODS

Dentists in the National Dental Practice-Based Research Network documented details of the preparation, impression, and delivery of 3730 consecutive single-unit crowns. Mixed-effects logistic regression analyses were performed to evaluate associations between impression techniques and materials and the CAC and to assess associations between the presence of a subgingival margin with the displacement technique and the outcome variables CAC and number of impressions required.

RESULTS

Of the 3730 crowns, 3589 (96.2%) were deemed clinically acceptable. A significant difference in the CAC was found with different impression techniques (P<.001) and different impression materials (P<.001). The percentage of the CAC for digital scans was 99.5%, 95.8% for dual-arch trays, 95.2% for quadrant trays, and 94.0% for complete-arch impression trays. Although no statistically significant difference was found in the CAC produced with dual-arch trays without both mesial and distal contacts, crowns fabricated under these conditions were less likely to achieve excellent occlusion. The percentage of the CAC for digital scans was 99.5%, 97.0% for polyether impressions, 95.5% for polyvinyl siloxane impressions, and 90.5% for other impression materials. Accounting for the location of the margin, the use of a dual-cord displacement technique was significantly associated with lower rates of requiring more than 1 impression (P=.015, odds ratio=1.43).

CONCLUSIONS

Dual-arch trays produced clinically acceptable crowns; however, if the prepared tooth was unbounded, the occlusal fit was more likely to have been compromised. Digital scans produced a slightly higher rate of CAC than conventional impression materials. The use of a dual-cord technique was associated with a decreased need to remake impressions when the margins were subgingival.

Prescription Drug Abuse Among Patients in Rural Dental Practices Reported by Members of the National Dental PBRN

PURPOSE

This study compared rural to nonrural dentists with respect to opioid prescribing practices, perceptions about prescription drug abuse among patients, and training relevant to pain management and addictions.

METHODS

A web-based, cross-sectional questionnaire was administered to practicing dentist members of the National Dental Practice-Based Research Network (PBRN; N = 822) and linked with network enrollment questionnaire data regarding practitioner demographics and practice characteristics. Pain management prescribing practices and perceptions regarding relevance and scope of addiction and drug diversion among patients were assessed. Rural practice was defined as a practice whose ZIP Code has more than 50% of its population in either a nonmetropolitan county and/or a rural Census tract.

FINDINGS

Rural dentists were significantly more likely than their nonrural counterparts to recommend nonsteroidal anti-inflammatory agents/acetaminophen in combination with prescribing an opioid [F (1,820) = 4.59, P = .03]. Compared to nonrural dentists, rural dentists were more likely to report that opioid abuse/diversion was a problem in their practices [χ² [1, n = 807] = 6.85, P < .001], were more likely to have suspected a patient of abuse or diversion [χ² [1, n = 807] = 10.12, P = .001], and were more likely to have refrained from prescribing due to suspicions of abuse or diversion [χ² [1, n = 807] = 12.49, P < .001].

CONCLUSION

Rural dentists may be disproportionately impacted by patients' opioid abuse and represent a viable target for educational outreach that encourages screening, identification, and referral of patients in need of drug abuse treatment.

Choice of cement for single-unit crowns: Findings from The National Dental Practice-Based Research Network

BACKGROUND

In this article, the authors present clinical factors associated with the type of cement practitioners use for restoration of single-unit crowns.

METHODS

A total of 202 dentists in The National Dental Practice-Based Research Network recorded clinical details (including cement type) used for 3,468 single-unit crowns. The authors classified crowns as bonded if the dentist used a resin cement. The authors used mixed-model logistic regression to assess the associations between various clinical factors and the dentist's decision to bond.

RESULTS

A total of 38.1% of crowns were bonded, and 61.9% were nonbonded; 39.1% (79 of 202) of dentists never bonded a crown, and 20.3% (41 of 202) of dentists bonded every crown in the study. Crowns with excessive occlusal reduction (as judged by laboratory technicians) were more likely to be bonded (P = .02); however, there was no association with bonding and excessive taper (P = .15) or axial reduction (P = .08). Crowns were more likely to be bonded if they were fabricated from leucite-reinforced glass ceramic (76.5%) or lithium disilicate (70.8%) than if they were fabricated from layered zirconia (38.8%), full-contour zirconia (30.1%), full metal (14.7%), or porcelain-fused-to-metal (13.8%) (P < .01) restorative material. There was no significant association between choice to bond and crown margin location (P = .35). Crowns in the anterior maxilla were more likely to be bonded (P < .01).

CONCLUSIONS

Excessive occlusal tooth preparation, anterior location of a crown, and the use of glass ceramic crowns were associated significantly with the decision to bond.

PRACTICAL IMPLICATIONS

In this study, the authors identified factors significantly associated with the clinical decision made by practicing dentists when selecting a cement for restoration of single-unit crowns.

Training experiences regarding pain management, addiction, and drug diversion of dentists enrolled in the National Dental Practice-Based Research Network

Background: The purpose of this study was to describe dentists' training experiences relevant to pain management, addiction, and prescription opioid drug diversion and examine associations between these training experiences and dentists' opioid prescribing practices. Methods: A Web-based, cross-sectional survey was conducted among practicing dentist members of the National Dental Practice-Based Research Network (PBRN; N = 822). The survey assessed pain management prescribing practices and training experiences related to pain management and assessment for addiction and drug diversion. Survey data were linked with National Dental PBRN Enrollment Questionnaire data regarding practitioner demographics and practice characteristics. Results: The majority of dentists (67%) reported prior training in pain management; however, a minority of dentists reported prior training regarding identification and assessment of drug abuse or addiction (48%) or identification of prescription drug diversion (25%). The majority of training experiences across all topics occurred through continuing dental education participation. Dental school training relevant to pain management, addiction, and identification of drug diversion was more prevalent among more recent dental school graduates. Training experiences were associated with prescribing practices. Conclusions: Results suggest that across multiple levels of training, many dentists are not receiving training specific to addiction assessment and identification of drug diversion. Such training is associated with greater consistency of risk mitigation implementation in practice.

Preparation Techniques Used to Make Single-Unit Crowns: Findings from The National Dental Practice-Based Research Network

PURPOSE

To: (1) determine which preparation techniques clinicians use in routine clinical practice for single-unit crown restorations; (2) test whether certain practice, dentist, and patient characteristics are significantly associated with these techniques.

MATERIALS AND METHODS

Dentists in the National Dental Practice-Based Research Network participated in a questionnaire regarding preparation techniques, dental equipment used for single-unit crown preparations, scheduled chair time, occlusal clearance determination, location of finish lines, magnification during preparation, supplemental lighting, shade selection, use of intraoral photographs, and trimming dies. Survey responses were compared by dentist and practice characteristics using ANOVA.

RESULTS

Of the 2132 eligible dentists, 1777 (83%) responded to the survey. The top two margin configuration choices for single-unit crown preparation for posterior crowns were chamfer/heavy chamfer (65%) and shoulder (23%). For anterior crowns, the most prevalent choices were the chamfer (54%) and the shoulder (37%) configurations. Regarding shade selection, a combination of dentist, assistant, and patient input was used to select anterior shades 59% of the time. Photographs are used to communicate shade selection with the laboratory in about half of esthetically demanding cases. The ideal finish line was located at the crest of gingival tissue for 49% of respondents; 29% preferred 1 mm below the crest; and 22% preferred the finish line above the crest of tissue. Average chair time scheduled for a crown preparation appointment was 76 ± 21 minutes. Practice and dentist characteristics were significantly associated with margin choice including practice type (p < 0.001), region (p < 0.001), and years since graduation (p < 0.001).

CONCLUSIONS

Network dentists prefer chamfer/heavy chamfer margin designs, followed by shoulder preparations. These choices were related to practice and dentist characteristics.

Remake Rates for Single-Unit Crowns in Clinical Practice: Findings from The National Dental Practice-Based Research Network

PURPOSE

Some crowns returned from the laboratory are clinically unacceptable, and dentists must remake them. The objectives of this study were to: (1) quantify the remake rate of single-unit crowns; and (2) identify factors significantly associated with crown remakes and intraoral fit.

MATERIALS AND METHODS

Dentists participating in the National Dental Practice-Based Research Network recruited patients needing crowns and documented fabrication techniques, patient characteristics, and outcomes. Crowns were considered clinically acceptable or rejected. Also, various aspects of the clinical fit of the crown were graded and categorized as 'Goodness of Fit (GOF).' Dentist and patient characteristics were tested statistically for associations with crown acceptability and GOF.

RESULTS

More than 200 dentists participated in this study (N = 205) and evaluated 3750 single-unit crowns. The mean age (years) of patients receiving a crown was 55. The remake rate for crowns was 3.8%. The range of rejection rates among individual practitioners was 0% to 42%. Most clinicians (118, or 58%) did not reject any crowns; all rejections came from 42% of the clinicians (n = 87). The most common reasons for rejections were proximal misfit, marginal errors, and esthetic failures. Fewer years in practice was significantly associated with lower crown success rates and lower fit scores. GOF was also associated with practice busyness and patient insurance status, patient gender (dentists reported better fit for female patients), and patient ethnicity.

CONCLUSIONS

The crown remake rate in this study was about 4%. Remakes and crown GOF were associated with certain dentist and practice characteristics.

Practitioner Participation in National Dental Practice-based Research Network (PBRN) Studies: 12-Year Results

PURPOSE

This study examines practitioner participation over 12 years in the National Dental Practice-Based Research Network (PBRN) studies and practitioner meetings, average length of participation, and association of practitioner- and practice-level characteristics with participation. Little information exists about practitioners' long-term participation in PBRNs.

METHODS

The network conducted a retrospective analysis of practitioner participation in 3 main network activities during 2005 to 2017. Practitioners who completed an enrollment questionnaire, practiced in the United States, and either attended a network meeting or received an invitation to complete a questionnaire or clinical study were included in the analysis. Practitioners (n = 3669) met inclusion criteria. The network implemented 38 studies (28 clinical and 10 questionnaire), 23 of which (15 clinical and 8 questionnaire) met the criteria for the current analysis.

RESULTS

Overall, 86% (N = 3148) participated in at least 1 network activity during 2005 to 2017. Questionnaire studies had the highest rate with 81% (N = 2963) completing at least 1, 21% (N = 762) completed at least 1 clinical study and 19% (N = 700) attended at least 1 network meeting. Among 1578 practitioners enrolled in the first 5 years of the Network launch, 20% (N = 320) participated in multiple network activities over 5 to 9 years, and 14% (N = 238) for 10 to 12 years. Practitioner characteristics associated with participation varied depending on the activity assessed.

CONCLUSION

The network engaged practitioners in its research activities with relatively high participation rates over a 12-year period. Strategies employed by the network to engage practitioners may serve as a model for PBRN networks for other allied health professions.

Prescription Drug Monitoring Program Use: National Dental PBRN Results

INTRODUCTION

The American Dental Association recommends that dentists use a prescription drug monitoring program (PDMP) prior to prescribing an opioid for acute pain management.

OBJECTIVE

The objective of this study was to examine dentists' experiences using their state PDMP, as well as the impact that state-mandated registration policies, mandated use policies, and practice characteristics had on the frequency with which dentists used their PDMP.

METHODS

We conducted a web-based cross-sectional survey among practicing dentist members of the National Dental Practice-Based Research Network ( n = 805). The survey assessed prescribing practices for pain management and implementation of risk mitigation strategies, including PDMP use. Survey data were linked with network Enrollment Questionnaire data to include practitioner demographics and practice characteristics.

RESULTS

Nearly half of respondents ( n = 375, 46.6%) reported having never accessed a PDMP, with the most common reasons for nonaccess being lack of awareness ( n = 214, 57.1%) and lack of knowledge regarding registration and use ( n = 94, 25.1%). The majority of PDMP users reported the program to be very helpful (58.1%) or somewhat helpful (31.6%). Dentists reported that PDMP use most often did not change their intended prescribing behavior (40.2%), led them not to prescribe an opioid (33.5%), or led them to prescribe fewer opioid doses (25.5%). Presence of a mandated use policy was significantly associated with increased frequency of PDMP use across a variety of situations, including prior to 1) prescribing any opioid for pain management, 2) issuing refills, 3) prescribing to new patients, and 4) prescribing to patients deemed high risk.

CONCLUSION

Findings suggest that the majority of dentists find PDMPs helpful in informing their opioid-prescribing practices. Whereas the existence of a state-mandated use policy is a consistent predictor of dentists' PDMP use, outreach and education efforts may overcome key barriers to use identified in this study.

KNOWLEDGE TRANSFER STATEMENT

Findings from this national survey suggest that the majority of practicing dentists find PDMPs helpful in informing their opioid-prescribing practices; however, consistent PDMP use was not common. Whereas the existence of a state-mandated use policy is a consistent predictor of dentists' PDMP use, outreach and education efforts may overcome key barriers to use identified in this study.

Opioid prescribing and risk mitigation implementation in the management of acute pain: Results from The National Dental Practice-Based Research Network

BACKGROUND

Minimal information exists regarding the consistency and correlates of dentists' implementation of risk mitigation strategies when prescribing opioids, including risk screening, prescription drug monitoring program (PDMP) use, and patient education.

METHODS

The authors conducted a Web-based, cross-sectional survey among practicing dentist members of The National Dental Practice-Based Research Network. The authors used the survey to assess pain management prescribing practices and risk mitigation implementation. The authors linked survey data with network enrollment questionnaire data to include practitioner demographic and practice characteristics.

RESULTS

A total of 822 dentists completed the survey. A minority of dentists reported prescribing opioids only (11%) or opioids in combination with a recommendation for nonsteroidal anti-inflammatory drugs or acetaminophen (18%) to one-half or more of their patients needing management of acute pain. Higher levels of opioid prescribing were associated significantly with less consistent implementation of PDMP use (r = -0.20) and patient education (r = -0.11).

CONCLUSIONS

Most dentists reported infrequent PDMP use and counseling patients regarding risks, storage, and disposal of opioids. Higher frequency of opioid prescribing was associated with less consistent risk mitigation implementation.

PRACTICAL IMPLICATIONS

When opioid prescribing is indicated, risk of misuse and diversion may be mitigated by consistent PDMP use and provision of patient education. Dental education in this arena is needed.

Surface characteristics and lesion depth and activity of suspicious occlusal carious lesions: Findings from The National Dental Practice-Based Research Network

BACKGROUND

A lesion on an occlusal tooth surface with no cavitation and no radiographic radiolucency but in which caries is suspected owing to surface roughness, opacities, or staining can be defined as a suspicious occlusal carious lesion (SOCL). The authors' objective was to quantify the characteristics of SOCLs and their relationship to lesion depth and activity after these lesions were opened surgically.

METHODS

Ninety-three dentists participated in the study. When a consenting patient had an SOCL, information was recorded about the tooth, lesion, treatment provided, and, if the SOCL was opened surgically, its lesion depth. The Rao-Scott cluster-adjusted χ² test was used to evaluate associations between lesion depth and color, roughness, patient risk, and luster.

RESULTS

The authors analyzed 1,593 SOCLs. Lesion color varied from yellow/light brown (40%) to dark brown/black (47%), with 13% other colors. Most (69%) of SOCLs had a rough surface when examined with an explorer. Over one-third of the SOCLs (39%) were treated surgically. Of the 585 surgically treated SOCLs, 61% had dentinal caries. There were statistically significant associations between lesion depth and color (P = .03), luster (P = .04), and roughness (P = .01). The authors classified 52% of the patients as being at elevated caries risk. The authors found no significant associations between lesion depth and patient risk (P = .07).

CONCLUSIONS

Although statistically significant, the clinical characteristics studied do not provide accurate guidance for making definitive treatment decisions and result in high rates of false positives.

PRACTICAL IMPLICATIONS

Given that 39% of the opened lesions did not have dentinal caries or were inactive, evidence-based preventive management is an appropriate alternative to surgical intervention.

Dentist material selection for single-unit crowns: Findings from the National Dental Practice-Based Research Network

OBJECTIVES

Dentists enrolled in the National Dental Practice-Based Research Network completed a study questionnaire about techniques and materials used for single-unit crowns and an enrollment questionnaire about dentist/practice characteristics. The objectives were to quantify dentists' material recommendations and test the hypothesis that dentist's and practice's characteristics are significantly associated with these recommendations.

METHODS

Surveyed dentists responded to a contextual scenario asking what material they would use for a single-unit crown on an anterior and posterior tooth. Material choices included: full metal, porcelain-fused-to-metal (PFM), all-zirconia, layered zirconia, lithium disilicate, leucite-reinforced ceramic, or other.

RESULTS

1777 of 2132 eligible dentists responded (83%). The top 3 choices for anterior crowns were lithium disilicate (54%), layered zirconia (17%), and leucite-reinforced glass ceramic (13%). There were significant differences (p<0.05) by dentist's gender, race, years since graduation, practice type, region, practice busyness, hours worked/week, and location type. The top 3 choices for posterior crowns were all-zirconia (32%), PFM (31%), and lithium disilicate (21%). There were significant differences (p<0.05) by dentist's gender, practice type, region, practice busyness, insurance coverage, hours worked/week, and location type.

CONCLUSIONS

Network dentists use a broad range of materials for single-unit crowns for anterior and posterior teeth, adopting newer materials into their practices as they become available. Material choices are significantly associated with dentist's and practice's characteristics.

CLINICAL SIGNIFICANCE

Decisions for crown material may be influenced by factors unrelated to tooth and patient variables. Dentists should be cognizant of this when developing an evidence-based approach to selecting crown material.