Does smoking increase the incidence of postoperative complications in simple exodontia?

Prevalence and factors associated with dry socket following routine dental extractions

BACKGROUND

Dry socket (DS) or fibrinolytic osteitis is a relatively common complication that can occur following tooth extraction. This study aimed to determine the prevalence of DS and identify its associated predictive and mediating variables.

MATERIAL AND METHODS

This study is classified as prospective observational, cross-sectional, and multicenter. Patients were consecutively selected in accordance with established criteria for tooth extraction. Data on patient demographics, surgical procedures and postoperative outcomes were collected. Nominal variables were analyzed using the Chi-Square Test, while associations involving ordinal values or considering counts or layers were examined using the Kendall's Tau-B Test or Mantel-Haenszel Test for trend. The GLM Mediation Model was employed to investigate potential mediation or indirect effects or potential underlying mechanisms of predictive variables on the development of DS. Two-tailed significance level of p ≤0.05 was considered statistically significant.

RESULTS

A total of 1,357 patients undergoing routine dental extractions were included. DS was observed in 13 patients (prevalence of 1%). DS was associated with younger patients (under 50 years old), longer procedures, and the presence of surgical accidents, but only when mediated by surgical complexity. Smoking, particularly in combination with complex surgeries and surgical accidents, was associated with DS. Postoperative pain for more than two days and reported at moderate to high levels, emerged as a potential warning sign for DS. The use of antibiotics was found to significantly reduce the risk of DS (RR reduction of 36% and absolute risk reduction of 0.63%).

CONCLUSIONS

Routine dental extractions revealed a 1% prevalence of dry socket. The obtained results suggests that DS is a multifactorial condition influenced by various factors, including gender, age, smoking, antibiotic prescription and surgical factors such as length, technique and accidents, nevertheless, those associations were observed mainly considering the influence of one variable on another.

Local interventions for the management of alveolar osteitis (dry socket)

BACKGROUND

Alveolar osteitis (dry socket) is a complication of dental extractions more often involving mandibular molar teeth. It is associated with severe pain developing 2 to 3 days postoperatively with or without halitosis, a socket that may be partially or totally devoid of a blood clot, and increased postoperative visits. This is an update of the Cochrane Review first published in 2012.  OBJECTIVES: To assess the effects of local interventions used for the prevention and treatment of alveolar osteitis (dry socket) following tooth extraction.

SEARCH METHODS

An Information Specialist searched four bibliographic databases up to 28 September 2021 and used additional search methods to identify published, unpublished, and ongoing studies.

SELECTION CRITERIA

We included randomised controlled trials of adults over 18 years of age who were having permanent teeth extracted or who had developed dry socket postextraction. We included studies with any type of local intervention used for the prevention or treatment of dry socket, compared to a different local intervention, placebo or no treatment. We excluded studies reporting on systemic use of antibiotics or the use of surgical techniques because these interventions are evaluated in separate Cochrane Reviews.

DATA COLLECTION AND ANALYSIS

We used standard methodological procedures expected by Cochrane. We followed Cochrane statistical guidelines and reported dichotomous outcomes as risk ratios (RR) and calculated 95% confidence intervals (CI) using random-effects models. For some of the split-mouth studies with sparse data, it was not possible to calculate RR so we calculated the exact odds ratio (OR) instead. We used GRADE to assess the certainty of the body of evidence.

MAIN RESULTS

We included 49 trials with 6771 participants; 39 trials (with 6219 participants) investigated prevention of dry socket and 10 studies (with 552 participants) looked at the treatment of dry socket. 16 studies were at high risk of bias, 30 studies at unclear risk of bias, and 3 studies at low risk of bias. Chlorhexidine in the prevention of dry socket When compared to placebo, rinsing with chlorhexidine mouthrinses (0.12% and 0.2% concentrations) both before and 24 hours after extraction(s) substantially reduced the risk of developing dry socket with an OR of 0.38 (95% CI 0.25 to 0.58; P < 0.00001; 6 trials, 1547 participants; moderate-certainty evidence). The prevalence of dry socket varies from 1% to 5% in routine dental extractions to upwards of 30% in surgically extracted third molars. The number of patients needed to be treated (NNT) with chlorhexidine rinse to prevent one patient having dry socket was 162 (95% CI 155 to 240), 33 (95% CI 27 to 49), and 7 (95% CI 5 to 10) for control prevalence of dry socket 0.01, 0.05, and 0.30 respectively.  Compared to placebo, placing chlorhexidine gel intrasocket after extractions reduced the odds of developing a dry socket by 58% with an OR of 0.44 (95% CI 0.27 to 0.71; P = 0.0008; 7 trials, 753 participants; moderate-certainty evidence). The NNT with chlorhexidine gel (0.2%) to prevent one patient developing dry socket was 180 (95% CI 137 to 347), 37 (95% CI 28 to 72), and 7 (95% CI 5 to 15) for control prevalence of dry socket of 0.01, 0.05, and 0.30 respectively. Compared to chlorhexidine rinse (0.12%), placing chlorhexidine gel (0.2%) intrasocket after extractions was not superior in reducing the risk of dry socket (RR 0.74, 95% CI 0.46 to 1.20; P = 0.22; 2 trials, 383 participants; low-certainty evidence).  The present review found some evidence for the association of minor adverse reactions with use of 0.12%, 0.2% chlorhexidine mouthrinses (alteration in taste, staining of teeth, stomatitis) though most studies were not designed explicitly to detect the presence of hypersensitivity reactions to mouthwash as part of the study protocol. No adverse events were reported in relation to the use of 0.2% chlorhexidine gel placed directly into a socket. Platelet rich plasma in the prevention of dry socket  Compared to placebo, placing platelet rich plasma after extractions was not superior in reducing the risk of having a dry socket (RR 0.51, 95% CI 0.19 to 1.33; P = 0.17; 2 studies, 127 participants; very low-certainty evidence).  A further 21 intrasocket interventions to prevent dry socket were each evaluated in single studies, and there is insufficient evidence to determine their effects. Zinc oxide eugenol versus Alvogyl in the treatment of dry socket Two studies, with 80 participants, showed that Alvogyl (old formulation) is more effective than zinc oxide eugenol at reducing pain at day 7 (mean difference (MD) -1.40, 95% CI -1.75 to -1.04; P < 0.00001; 2 studies, 80 participants; very low-certainty evidence) A further nine interventions for the treatment of dry socket were evaluated in single studies, providing insufficient evidence to determine their effects.

AUTHORS' CONCLUSIONS

Tooth extractions are generally undertaken by dentists for a variety of reasons, however, all but five studies included in the present review included participants undergoing extraction of third molars, most of which were undertaken by oral surgeons. There is moderate-certainty evidence that rinsing with chlorhexidine (0.12% and 0.2%) or placing chlorhexidine gel (0.2%) in the sockets of extracted teeth, probably results in a reduction in dry socket. There was insufficient evidence to determine the effects of the other 21 preventative interventions each evaluated in single studies. There was limited evidence of very low certainty that Alvogyl (old formulation) may reduce pain at day 7 in patients with dry socket when compared to zinc oxide eugenol.

Smoking as a Risk Factor for Dry Socket: A Systematic Review

Dry socket is one of the postoperative complications of tooth extraction. It is the partial or total loss of the post-extraction blood clot, resulting in severe pain that usually starts one to five days postoperatively, with clinical evidence of exposed alveolar bone, necrotic debris, halitosis, and tenderness on examination. The purpose of our systematic review was to answer the question "Is there a relationship between smoking and dry socket?". After meeting the inclusion and exclusion criteria, eleven studies were included in this systematic review (according to the PRISMA statement guidelines). Based on a meta-analysis, tobacco smokers had a more than three-fold increase in the odds of dry socket after tooth extraction. Overall, the combined incidence of dry socket in smokers was found to be about 13.2% and in non-smokers about 3.8%. Despite the heterogeneity of the included studies (different types of teeth extracted, different age groups), cigarette smoking was related to an increased risk of dry socket after tooth extraction.

Can Teledentistry Replace Conventional Clinical Follow-Up Care for Minor Dental Surgery? A Prospective Randomized Clinical Trial

(1) Background: Born out of necessity, the implementation of digital processes experienced significant increase during the COVID-19 pandemic. Here, telemedicine offered a bridge to care and now an opportunity to reinvent virtual and hybrid care models, with the goal of improved healthcare access, outcomes, and affordability. The aim of this monocentric prospective, randomized trial was to compare conventional to telephone follow-up after minor dentoalveolar surgery on the basis of special aftercare questionnaires. (2) Methods: Sixty patients who underwent dentoalveolar surgery under local anesthesia were randomly assigned to both groups. After an average of four days, either telephone follow-up (test) or conventional personal aftercare (control) was performed. Based on the questionnaire, the following subject areas were evaluated: symptoms, complications, satisfaction with practitioner, travel, and waiting time, as well as the preferred form of follow-up care. (3) Results: There was no statistically significant difference regarding frequency of symptoms or complication rate. Patients who were assigned to the test group showed a clear tendency to prefer telephone follow-up (83.3%) to conventional aftercare (16.7%, p = 0.047). (4) Conclusions: The data suggest high acceptance of telephone-only follow-up after dentoalveolar surgery. The implementation of telemedicine could be a time- and money-saving alternative for both patients and healthcare professionals and provide healthcare access regardless of time and space.

Alveolar Osteitis: A Review of Current Concepts

PURPOSE

The purpose of the present review was to explore the pathogenesis and etiology of alveolar osteitis (AO) to obtain a more intuitive understanding of the clinical prevention and management of the condition. The different treatment modalities were discussed through both the mechanistic understanding of AO and the evidence regarding the different modes of prevention and management.

MATERIALS AND METHODS

The Ovid Medline, PubMed, and Cochrane Central Register online databases were used to complete an advanced search using the MeSH term "dry socket," generating 756 results.

RESULTS

A total of 8 studies on the prevention of AO were included, with 66 studies included for review of the reported data overall. The information was categorized into incidence, etiology and pathogenesis, prevention, and management. The relevant background information and evidence for each category were summarized.

CONCLUSIONS

Understanding of the pathogenesis and etiology of AO has improved in recent years, which has been helpful for developing effective evidence-based treatment and prevention of the condition. Clinicians should be aware of the complexity and multifactorial nature of the etiology of AO and the current concepts regarding the prevention and treatment of AO.

Factors Influencing the Onset of Intra- and Post- Operative Complications Following Tooth Exodontia: Retrospective Survey on 1701 Patients

Complications after tooth extraction may occur because of several factors correlated to the patient's medical history, surgical site or type of intervention. The aim of this retrospective cohort study was to evaluate type and frequency of complications after exodontic surgery, its correlation with antibiotic administration and between patient's related systemic factors. From June 2015 until February 2016 1701 exodontic interventions, for a total of 2322 extracted teeth, were carried out at the Unit of Oral Surgery in Trieste. Descriptive statistic, and backward multiple logistic regressions were performed to identify the variables associated with the presence of post-operative alveolitis or any other post-operative complication. The presence of coagulopathy and smoking habit were related to high risk of post-operative alveolitis (OR = 5.51, p = 0.035 and OR = 2.5, p = 0.029, respectively). Tooth fracture was found to be correlated with higher probability of post-operative alveolitis (p = 0.001) and concomitant chemotherapy put at a higher risk post-operative complications, including alveolitis (OR = 29.5, p = 0.018). According to the present results, antibiotic consumption did not seem to reduce the incidence of post-operative infective complications (alveolitis). A careful analysis of medical history, the adequate surgical technique, and the correct instructions in post-surgical behavior, prevent the insurgence of intra and post-operative complications.