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Introduction The purpose of this study was to review evidence-based recommendations for the safe perioperative management of patients undergoing endodontic microsurgery who are currently taking antiplatelet or anticoagulant medications. Using the PICO (Population, Intervention, Comparison, Outcome) format, the following scientific question was asked: In patients taking anticoagulant or antiplatelet agents, what is the available evidence in the management of endodontic microsurgery? Methods MEDLINE, Scopus, Cochrane Library, and ClinicalTrials.gov databases were searched to identify current recommendations regarding the management of antiplatelet and anticoagulant medications in the context of outpatient dental surgical procedures. Additionally, the authors hand searched the bibliographies of all relevant articles, the gray literature, and textbooks. Because of the lack of clinical studies and evidence on this subject, articles and guidelines from other organizations and association position statements were included. Results Because any minor surgery can become a major surgery, the treating doctor needs to best assess the risk of bleeding, especially if the surgery is anticipated to take longer than 45 minutes. Every patient should be stratified on a case-by-case basis. Consultation with the patient’s physician is highly recommended. Conclusions In order to maximize the effects of these medications (to prevent thrombosis) while minimizing the potential risks (procedural hemorrhage), clinicians should be aware of the best available evidence when considering continuation or discontinuation of antiplatelet and anticoagulant agents perioperatively for endodontic microsurgery. Ideally, a joint effort from an expert panel for microsurgery would be warranted.

Introduction Tooth mobility is often discussed among dental health care providers according to a numerical scale (ie, 1, 2, or 3) without a clear understanding of the definition of each category. Thus, a comprehensive review to examine and discuss the various classifications is needed. The aim of this comprehensive review was to discuss the main clinical classifications of tooth mobility. Methods The authors conducted electronic searches in MEDLINE, Scopus, and PubMed. Additionally, the authors manually searched the textbooks, gray literature, and bibliographies of all relevant articles. Results The most commonly referenced clinical index for mobility was the Miller index; yet, many other mobility classifications exist as well as modifications of those indexes. The literature has been very inconsistent and at times inaccurate when classifying mobility; using various stages of mobility using grades, classes, and scores interchangeably and not defining the meaning of the actual numerical scores/terminologies are common problems. Conclusions In order to avoid ambiguity and provide clarity regarding the impact of degrees of mobility when used clinically, this review comprehensively discusses different classifications and definitions of tooth mobility with attention to the importance of using them consistently and accurately. There is a need to standardize 1 classification for mobility.

Background Patients with pulpal and periapical conditions often seek treatment for pain, intraoral swelling, or both. Even when definitive, conservative dental treatment (DCDT) is an option, antibiotics are often prescribed. The purpose of this review was to summarize available evidence regarding the effect of antibiotics, either alone or as adjuncts to DCDT, to treat immunocompetent adults with pulpal and periapical conditions, as well as additional population-level harms associated with antibiotic use. Type of Studies Reviewed The authors updated 2 preexisting systematic reviews to identify newly published randomized controlled trials. They also searched for systematic reviews to inform additional harm outcomes. They conducted searches in MEDLINE, Embase, the Cochrane Library, and the Cumulative Index to Nursing and Allied Health Literature. Pairs of reviewers independently conducted study selection, data extraction, and assessment of risk of bias and certainty in the evidence using the Grading of Recommendations Assessment, Development, and Evaluation approach. Results The authors found no new trials via the update of the preexisting reviews. Ultimately, 3 trials and 8 additional reports proved eligible for this review. Trial estimates for all outcomes suggested both a benefit and harm over 7 days (very low to low certainty evidence). The magnitude of additional harms related to antibiotic use for any condition were potentially large (very low to moderate certainty evidence). Conclusions and Practical Implications Evidence for antibiotics, either alone or as adjuncts to DCDT, showed both a benefit and a harm for outcomes of pain and intraoral swelling and a large potential magnitude of effect in regard to additional harm outcomes. The impact of dental antibiotic prescribing requires further research.

The purpose of this systematic review was to examine if, in adult patients, the absence or presence of smoking influenced the prevalence of periapical periodontitis (PP). Databases were searched, and original research manuscripts up to June 2019 were identified by two reviewers. The Newcastle-Ottawa Scale (NOS) was used for risk of bias. The Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system was used for certainty in the evidence. A meta-analysis was performed using RevMan 5 software. Risk ratio (RR) was used for the cohort studies, and odds ratio (OR) was used for the case-control studies with 95% confidence interval (CI). All the studies had many covariates and confounding variables. Three longitudinal cohort articles discussed radiographic findings as they related to the prevalence of PP in root-filled teeth. The RR of smoking and the prevalence of PP was 2.11 (95% CI 0.88–5.05, p = 0.09). Nine case-control studies focused on the prevalence of PP and smoking. There was a positive association between smoking and the prevalence of PP with an OR of 2.78 and a 95% confidence interval of 2.23–3.48, with p value < 0.05. The quality of the studies was fair per NOS, and the certainty of the literature assessment was moderate per GRADE. The current best available evidence suggests that smoking was associated with the prevalence of PP but more studies are needed to report this association in the longitudinal cohort studies. Smoking has a positive association with the prevalence of PP.

Background The purpose of this investigation was to identify evidence-based clinical trials to aid dental clinicians in establishing the efficacy for recommending or prescribing analgesics for pain of endodontic origin. Types of Studies Reviewed The authors prepared and registered a protocol on PROSPERO and conducted electronic searches in MEDLINE, Scopus, the Cochrane Library, and ClinicalTrials.gov. In addition, the authors manually searched the bibliographies of all relevant articles, the gray literature, and textbooks for randomized controlled trials. Two authors selected the relevant articles independently. There were no disagreements between the authors. Results The authors analyzed 27 randomized, placebo-controlled trials. The authors divided the studies into 2 groups: preoperative and postoperative analgesic treatments. There was moderate evidence to support the use of steroids for patients with symptomatic irreversible pulpitis. Also, there was moderate evidence to support nonsteroidal anti-inflammatory drugs (NSAIDs) preoperatively or postoperatively to control pain of endodontic origin. When NSAIDs were not effective, a combination of NSAIDs with acetaminophen, tramadol, or an opioid appeared beneficial. Conclusions and Practical Implications NSAIDs should be considered as the drugs of choice to alleviate or minimize pain of endodontic origin if there are no contraindications for the patient to ingest an NSAID. In situations in which NSAIDs alone are not effective, the combination of an NSAID with acetaminophen or a centrally acting drug is recommended. Steroids appear effective in irreversible pulpitis.

Introduction The purpose of this systematic review was to compare and quantify endodontic outcome using cone-beam computed tomographic (CBCT) imaging with intraoral periapical radiography. Methods Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. Additionally, bibliographies, gray literature of all relevant articles, and textbooks were manually searched. There was no disagreement between the 2 reviewers. Results Six articles met the inclusion criteria with low to moderate risk of bias (good/fair quality). The certainty of evidence was moderate, indicating that the authors are moderately confident that the true effect lies close to that of the estimate of the effect as determined by Grading of Recommendations Assessment Development and Evaluation criteria. The odds ratio of CBCT imaging versus traditional imaging to detect a periapical lesion was 2.04 (95% confidence interval, 1.52–2.73). Conclusions Although intraoral radiographs are the imaging modality of choice, when 2-dimensional intraoral radiography is inconclusive, CBCT imaging was reported in this investigation to have twice the odds of detecting a periapical lesion than traditional periapical radiography in endodontic outcome studies.

Background The purpose of this investigation was to identify evidence-based scientific methodologies to aid dental clinicians in establishing the indications for prescribing antibiotics for endodontic infection or pain. Methods The authors prepared and registered a protocol on PROSPERO. They conducted electronic searches in MEDLINE, Scopus, Cochrane Library, and ClinicalTrials.gov . In addition, the authors hand searched the bibliographies of all relevant articles, the gray literature, and textbooks for randomized controlled clinical studies. The authors independently selected the relevant articles. Results The overall quality of the studies was fair with a low risk of bias, but 2 studies had a moderate risk of bias. Conclusions The best available clinical evidence signals no indications for prescribing antibiotics preoperatively or postoperatively to prevent endodontic infection or pain unless the spread of infection is systemic, the patient is febrile, or both. Generally, an accurate diagnosis coupled with effective endodontic treatment will decrease microbial flora enough for healing to occur. Practical Implications To help decrease the number of drug-resistant microbes, oral health care providers should not prescribe antibiotics when they are not indicated.

Introduction To date, only a few studies have searched for relationships between genetic polymorphism and periapical microbial infection. Thus, the purpose of this systematic review was to evaluate the relationship between host modifying factors and their association with apical periodontitis. Methods Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. Additionally, the bibliographies of all relevant articles and textbooks were manually searched. Results Eight articles were identified and included in this review. The results of the present review suggest that although some authors have reported that some biologic markers may play a role in apical periodontitis, others have not supported this association. Limitations were noted in the current studies by not judiciously matching selected case/control groups, balancing or adjusting for confounders (such as smoking, diabetes, and body mass index), using the Hardy-Weinberg Equilibrium, providing power calculation for a given sample size, correcting for false-positive (type I) error, or providing odds ratios with confidence intervals. The results of this review suggest polymorphism and biological modifiers, by which some individuals, if challenged by bacterial accumulations, may exhibit a more vigorous immunoinflammatory response, leading to apical periodontitis. Conclusions More research in this area is warranted to determine greater specificity in these possible interactions.

Objective: To evaluate the relationship between genetic polymorphism and external apical root resorption. Methodology: The protocol was prepared and registered on PROSPERO. Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. In addition, the bibliographies of all relevant articles and textbooks were manually searched. Results: Thirteen studies met the inclusion criteria. Four studies were classified as low-quality studies (score Discussion: The results of the present review suggest that, although some authors have reported that genetic polymorphism may play a role in external apical root resorption, others have not supported this association. Future studies should be more consistent in their research methodologies to determine with clarity whether an association exists. Conclusion: Future investigations should include larger sample sizes with matching cases/controls, adjust for confounders, provide power calculation and odds ratios, and report genetic analyses with the Hardy-Weinberg equilibrium. The current investigation suggests guidelines and recommendations for future investigators studying genetic polymorphism in patients undergoing orthodontic treatment.

Introduction To date, the relationships between systemic diseases and periapical microbial infection remain unknown. Thus the purpose of this systematic review was to evaluate the relationship between host modifying factors and their association with endodontic pathosis. Methods Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. In addition, the bibliographies of all relevant articles and textbooks were manually searched. There was no disagreement between the 2 reviewers. Results Sixteen articles were identified and included. The overall quality of the studies and the risk of bias were rated to be moderate. Only 3 studies demonstrated a low level of bias. Conclusions The results of this review suggest that there may be a moderate risk and correlation between some systemic diseases and endodontic pathosis. More prospective and longitudinal research in this area is warranted to determine greater specificity in these possible interactions to potentially decrease or minimize the effects of systemic disease on the formation of apical periodontitis.

Introduction The purpose of this systematic review was to determine whether endodontic infections had an impact on the pathogenesis of systemic disease. Methods Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. In addition, the bibliographies, gray literature of all relevant articles, and textbooks were manually searched. There was no disagreement between the 2 reviewers. Results Four articles met the inclusion criteria with a high risk of bias. Three articles were analyzed for quantitative synthesis. All these articles were regarding cardiovascular disease (CVD). There was low-certainty evidence that a lesion of endodontic origin can contribute to systemic disease, 95% confidence interval, risk ratio 1.2 (0.79–1.83). Owing to high heterogeneity among the studies, sub-group analysis was undertaken. The results reported more consistent outcome with risk ratio 0.95 (0.75–1.21) and low certainty. Therefore, the authors have limited confidence in the effect estimate, which indicates that the true effect may be substantially different from the estimate of the effect. Conclusions Whether the presence of a lesion of endodontic origin may or may not have some impact on cardiovascular disease, the level of evidence is low, and our confidence in the assessment is low. This systematic review raised questions in the designs and analysis of the data, and further well-conducted longitudinal research would be required to make this causality claim.

The purpose of this systematic review was to determine, in patients undergoing root canal treatment, whether apical enlargement of canals affected microbial reduction. A PICO (population, intervention, comparison and outcome) strategy was developed to identify previously published studies dealing with apical size of canal and microbial reduction. The MEDLINE, Embase, Cochrane and PubMed databases were searched. Additionally, the bibliographies of all relevant articles and textbooks were manually searched. Based on inclusion and exclusion criteria, two reviewers independently selected the relevant articles. Due to the variety of methodologies and different techniques used to measure outcome for master apical file enlargement, it was not possible to standardize the research data and to apply a meta-analysis. Seven articles were identified that met the inclusion criteria. Five of the seven articles generally concluded that canal enlargement reduced bioburden in the root canal system. Two articles reported no difference in canals enlarged to size 25 or 40. The results of the systematic review confirmed that more evidence-based research in this area is needed. With the limited information currently available, the best current available clinical evidence suggests that contemporary chemomechanical debridement techniques with canal enlargement techniques do not eliminate bacteria during root canal treatment at any size.

Background An expert panel convened by the American Dental Association Council on Scientific Affairs and the Center for Evidence-Based Dentistry conducted a systematic review and formulated clinical recommendations for the urgent management of symptomatic irreversible pulpitis with or without symptomatic apical periodontitis, pulp necrosis and symptomatic apical periodontitis, or pulp necrosis and localized acute apical abscess using antibiotics, either alone or as adjuncts to definitive, conservative dental treatment (DCDT) in immunocompetent adults. Types of Studies Reviewed The authors conducted a search of the literature in MEDLINE, Embase, the Cochrane Library, and the Cumulative Index to Nursing and Allied Health Literature to retrieve evidence on benefits and harms associated with antibiotic use. The authors used the Grading of Recommendations Assessment, Development and Evaluation approach to assess the certainty in the evidence and the Evidence-to-Decision framework. Results The panel formulated 5 clinical recommendations and 2 good practice statements, each specific to the target conditions, for settings in which DCDT is and is not immediately available. With likely negligible benefits and potentially large harms, the panel recommended against using antibiotics in most clinical scenarios, irrespective of DCDT availability. They recommended antibiotics in patients with systemic involvement (for example, malaise or fever) due to the dental conditions or when the risk of experiencing progression to systemic involvement is high. Conclusion and Practical Implications Evidence suggests that antibiotics for the target conditions may provide negligible benefits and probably contribute to large harms. The expert panel suggests that antibiotics for target conditions be used only when systemic involvement is present and that immediate DCDT should be prioritized in all cases.

Introduction To date, the relationships between systemic diseases and endodontic treatment outcomes remain poorly studied. Thus, the purpose of this systematic review was to evaluate the relationship between host-modifying factors and their association with endodontic outcomes. Methods Two reviewers independently conducted a comprehensive literature search. The MEDLINE, Embase, Cochrane, and PubMed databases were searched. In addition, the bibliographies and gray literature of all relevant articles and textbooks were manually searched. There was no disagreement between the 2 reviewers. Results Sixteen articles met the inclusion criteria with moderate to high risk of bias. There was no article with low risk of bias. Available scientific evidence remains inconclusive as to whether diabetes and/or cardiovascular disease(s) may be associated with endodontic outcomes. Human immunodeficiency virus and oral bisphosphonate did not appear to be associated with endodontic outcomes. Conclusions Although additional well-designed longitudinal clinical studies are needed, the results of this systematic review suggest that some systemic diseases may be correlated with endodontic outcomes.

Introduction The purpose of this review was to discuss new issues related to safety, labeling, dosing, and a better understanding of the analgesic effect of acetaminophen. Methods The MEDLINE, Embase, Cochrane, and PubMed databases were searched. Additionally, the bibliography of all relevant articles and textbooks were manually searched. Two reviewers independently selected the relevant articles. Results Concerns about acetaminophen overdose and related liver failure have led the US Food and Drug Administration to mandate new labeling on acetaminophen packaging. In addition, large-scale epidemiologic studies increasingly report evidence for second-generation adverse effects of acetaminophen. Prenatal exposure to acetaminophen is associated with neurodevelopmental and behavioral disorders. Recent studies also suggest that acetaminophen is a hormone disrupter (ie, it interferes with sex and thyroid hormone function essential for normal brain development) and thus may not be considered a safe drug during pregnancy. Finally, emerging evidence suggests that although the predominant mechanism by which acetaminophen exerts its therapeutic effect is by inhibition of cyclooxygenase, multiple other mechanisms also contribute to its analgesic effect. Conclusions Available evidence suggests that indiscriminate usage of this drug is not warranted. and its administration to a pregnant patient should be considered with great caution.

The purpose of this systematic review was to determine in patients undergoing root canal treatment, whether apical enlargement affected the healing outcome. A PICO (population, intervention, comparison and outcome) strategy was developed to identify studies dealing with apical size of canal and healing outcome as measured clinically and radiographically. The MEDLINE, Embase, Cochrane and PubMed databases were searched. Additionally, the bibliography of all relevant articles and textbooks was manually searched. Based on inclusion and exclusion criteria, two reviewers independently selected the relevant articles. Four articles were identified that met the inclusion criteria. There were no studies that evaluated apical enlargement and healing outcome using cone beam computed tomography. The results of the systematic review confirmed that more evidence-based research in this area is needed. With the limited information available, the best current available clinical evidence suggests that for patients with necrotic pulps and periapical lesions, enlargement of the apical size would result in an increased healing outcome in terms of clinical and radiographic evaluations.