The relationship of shammah (Arabian snuff) chewing to the risk of oral cancer and oral potentially malignant disorders.

INTRODUCTION: Shammah is a form of smokeless tobacco commonly used in the Arabian Peninsula. The data on the harmful effects of shammah on oral health, particularly oral malignancies, are scarce. The aim of this review was to explore the association between shammah use and development of oral potentially malignant disorders (OPMD) and/or oral cancer. MATERIALS AND METHODS: PubMed, EMBASE, Scopus, Web of Science and grey literature from January 1990 up to and including April 2018 were searched. Two independent reviewers performed the study selection according to eligibility criteria. RESULTS: A total of 10 studies that met the eligibility criteria were included. The odds of developing OPMD and/or oral cancer in relation to shammah use varied, with one study reporting a 39 increased risk (39, 95% CI: 14-105). The associated increased risk was relatively low among those that have stopped using shammah and ranged from threefold (3.65; 95% CI: 1.40-9.50) to 12-fold (12.6; 95% CI: 3.3-48.2). CONCLUSION: Shammah use seems to increase the risk of development of OPMD and/or oral cancer.

Association of nitric oxide with oral lichen planus.

BACKGROUND: The small signalling molecule nitric oxide (NO) has been postulated to have a mediator role in the pathogenesis of several diseases including oral lichen planus (OLP). This systematic review aimed to quantify the existing literature and assess the association of NO and OLP. METHODS: The focused question being addressed was "Is there an association between nitric oxide and OLP?" PubMed, EMBASE, Scopus, and Web of Science, and grey literature from January 1990 to August 2018 were searched. Two independent reviewers performed the study selection using specified eligibility criteria. RESULTS: Seven studies that met the eligibility criteria were included. All of these were case-control studies and 151 patients with OLP were evaluated (mostly females), with an age ranged from 20 to 75 years. The included studies showed a significant higher NO levels in OLP patients compared to the healthy controls, with two studies demonstrated a higher NO levels in erosive OLP compared to non-erosive OLP. CONCLUSION: These findings support that an association exists between higher NO concentration and OLP. However, larger high-quality studies with refined methodological design are needed to confirm the role of NO in the aetiology and pathogenesis of OLP.

A potential new oral mapping (OM) method in the clinical evaluation and documentation of oral submucous fibrosis-A prospective clinical crossover study.

BACKGROUND: Despite much research, there is a lack of a definite protocol or method for documenting oral submucous fibrosis (OSMF) site presentation. In this study, we propose a new potential oral mapping (OM) method and evaluated its use in recording OSMF-affected mucosal sites. METHODS: Fifty OSMF patients were evaluated by 15 primary care dental practitioners using both, a conventional subjective recording method and a new OM method, to document the degree of involvement of affected oral mucosa with a crossover study design. Mann-Whitney test (non-parametric test) was used to make comparison between groups to determine any significant differences between the two identification methods. Wilcoxon tests were used to evaluate any significant differences in the difficulty in identification of two methods. RESULTS: There was a low agreement between the two methods used to detect OSMF in affected mucosal surfaces (P-value < 0.0001). More lesions were identified using the proposed OM method, and less discrepancy was found among dental practitioners. A difference in difficulty of OSMF documentation was found (Wilcoxon z = 3.615, P-value < 0.001), with the proposed OM method found to be easier. CONCLUSION: The proposed OM method appears to be useful for documentation, can easily be adapted in clinical practice, and effectively administered in clinical research. Additionally, it could be a useful tool to helping to maintain an OSMF database.

The relationship of "shisha" (water pipe) smoking to the risk of head and neck cancer.

INTRODUCTION: There has been a recent rise in popularity of waterpipe smoking (WPS) among younger people. While it is a tobacco-related product, research on the possible deleterious effects on health and its relationship with cancer is sparse. In this paper, we evaluated the existing literature and association of WPS with head and neck cancer. MATERIALS AND METHODS: PubMed, EMBASE, Scopus, Web of Science and grey literature from January 1990 up to and including March 2017 were searched. Two independent reviewers performed the study selection according to eligibility criteria. RESULTS: A total of seven studies that met the eligibility criteria were included. In four studies that evaluated the associated risk of oesophageal cancer, the odds ratio (OR) ranged from 1.69 (95% CI = 0.76-3.77) to 21.4 (95% CI = 11.6-39.5). The OR for the association of WPS with nasopharyngeal cancer and oral cancer was reported to be 0.49 (95% CI = 0.20-1.43) and 4.20 (95% CI = 1.32-13.3), respectively. One study that evaluated risk in different head and neck cancers reported 2-fold OR (2.73 [95% CI = 1.65-4.41]). CONCLUSION: On the basis of our evaluation, there is an association of WPS with head and neck cancer. However, larger studies with standardized methods are needed to identify the possible detrimental health effects of WPS more fully.

TFM classification and staging of oral submucous fibrosis: A new proposal.

BACKGROUND: We have evaluated the rationale of existing grading and staging schemes of oral submucous fibrosis (OSMF) based on how they are categorized. A novel classification and staging scheme is proposed. METHODS: A total of 300 OSMF patients were evaluated for agreement between functional, clinical, and histopathological staging. Bilateral biopsies were assessed in 25 patients to evaluate for any differences in histopathological staging of OSMF in the same mouth. Extent of clinician agreement for categorized staging data was evaluated using Cohen's weighted kappa analysis. Cross-tabulation was performed on categorical grading data to understand the intercorrelation, and the unweighted kappa analysis was used to assess the bilateral grade agreement. Probabilities of less than 0.05 were considered significant. Data were analyzed using SPSS Statistics (version 25.0, IBM, USA). RESULTS: A low agreement was found between all the stages depicting the independent nature of trismus, clinical features, and histopathological components (K = 0.312, 0.167, 0.152) in OSMF. Following analysis, a three-component classification scheme (TFM classification) was developed that describes the severity of each independently, grouping them using a novel three-tier staging scheme as a guide to the treatment plan. CONCLUSION: The proposed classification and staging could be useful for effective communication, categorization, and for recording data and prognosis, and for guiding treatment plans. Furthermore, the classification considers OSMF malignant transformation in detail.

Surgical outcome of two-flap palatoplasty at King Fahad Medical City: A tertiary care center experience.

The purpose of this study was to assess surgical outcomes of two-flap palatoplasty for management of cleft palate.Between January 2009 and January 2017, we recruited 29 nonsyndromic patients who underwent two-flap palatoplasty for cleft palate repair at the oral and maxillofacial department. Their medical records were procured, and surgical outcomes were assessed. Velopharyngeal insufficiency (VPI) was evaluated on the basis of speech assessment by a speech therapist. Speech abnormality (nasality, nasal emission, and articulation error) was assessed by a speech therapist using the GOSS-Pass test. Swallowing and regurgitation were assessed by a swallowing team. Fistula and wound dehiscence were clinically assessed by the primary investigator. Documented data were evaluated using statistical analysis. Among the study patients; 75.8 % had normal speech, 20.7 % developed VPI; 17.3% had hypernasality; 4.3% had hypernasality as well as nasal emission; 4.3% had hypernasality, nasal emission, and articulation errors; and 4.3% had articulation errors. Approximately 20% of the patients had fistulas (83.3% had oronasal fistulas and 16.7% had nasovestibular fistulas). Normal swallowing findings were noted in 93% of the patients. There were statistically significant relationships between age-repair and VPI (r=0.450, t=0.014), age-speech (r=0.525, t=0.003), and age-fistula development (r=0.414, t=0.026). Conversely, there were no significant relationships between age and dehiscence (r=0.127, t=0.512), age and swallowing (r=0.360, t=0.055), and age and regurgitation (r=0.306, t=0.106). Two-flap palatoplasty is a reliable technique with excellent surgical and speech outcomes. Early repair is associated with better speech outcome and less incidence of VPI.

Predictors of Oral Function and Facial Aesthetics Post Maxillofacial Reconstruction with Free Fibula Flap.

BACKGROUND: For maxillofacial reconstruction, free flaps have largely replaced pedicled flaps. In a Saudi Arabian sample, we (1) assessed patients' postoperative oral function and facial aesthetics (OFFA), specifically pertaining to diet, speech intelligibility, oral opening, maxilla-mandibular occlusion, and facial aesthetics (all rated 0-2) following fibular free flap surgery; and (2) identified preoperative predictors of a novel 10-point OFFA rating scale combining these 5 parameters. METHODS: We conducted a retrospective review of the medical records of all patients who underwent free fibula flap surgery for nontraumatic maxillofacial reconstruction from 2010 to 2017 and were followed postoperatively for at least 6 months or until death. RESULTS: In 20 patients (10 female; mean age, 33.8; range, 7-56), the results were excellent, 19 of 20 patients ultimately resuming a normal diet, one a soft diet; good oral opening in 18; and normal speech, normal occlusion, and an aesthetically good result, each in 17 patients. Half the patients had a perfect (10/10) OFFA score at final assessment, whereas 2 scored 9/10, one 8/10, and two 6/10. On univariate analysis, patient age > 45, tumor of higher malignancy potential, comorbid illness, and adjuvant radiotherapy predicted a worse OFFA score, whereas a multivariate model combining comorbid illness (P = 0.002) and preoperative radiotherapy (P = 0.010) predicted a lower OFFA score, accounting for 57% of the variance (R2 = 0.57). CONCLUSION: In Saudi Arabia, fibular free flaps yielded overall very good to excellent results in 19 of 20 patients undergoing nontraumatic maxillofacial reconstruction.

Current protocols in the management of oral submucous fibrosis: An update.

Oral submucous fibrosis (OSMF) is a debilitating condition of oral cavity which has significant potential for malignant transformation. In spite of over 20 years of research, the pathogenesis of the condition is still obscure and no single management modality is effective. Many OSMF treatment protocols have been proposed to alleviate the signs and symptoms of the disorder and there is overwhelming evidence that as areca nut is primary cause, stopping its use may have a considerable effect on symptoms rather than reversing pre-existing fibrosis. We present a review of the current protocols for managing OSMF.

Oral submucous fibrosis: An update on pathophysiology of malignant transformation.

Oral submucous fibrosis (OSMF) is a potentially malignant condition associated with areca nut chewing. Formerly confined to the Indian subcontinent, it is now often seen in Asian populations of the United Kingdom, USA and other developed countries, and is therefore a serious problem for global health. What makes it more sinister is the malignant transformation rate, which has been reported to be around 7.6% over a 17-year period. In this concise article, we review the current trends in the pathophysiology of malignant transformation of OSMF.

Breath Alkane as an index of severity for oral submucous fibrosis: A new perspective?

Oral submucous fibrosis (OSMF) is a devastating disease commonly seen in the Asian subcontinent that results in significant functional morbidity for patients and has a high potential for malignant transformation. Over the last three decades, different diagnostic methods have been described to quantify and grade OSMF severity. Some methods have been used with perceived favorable outcomes although recurrence and malignant transformation remains a problem in many cases, and OSMF presents a major therapeutic challenge. We present a simple, noninvasive and less time-consuming diagnostic method which measures the severity of OSMF, helping to predict its malignant transformation and monitoring the effect of medical therapy on this disease.

Primary Diffuse Large B-cell Lymphoma involving the Mandible.

Lymphomas of the oral cavity are rare and typically present as intraosseous lesions that are most commonly diffuse large B-cell type. Diffuse large B-cell lymphoma (DLBCL) is an aggressive B-cell lymphoma histologically characterized by diffuse proliferation of large neoplastic B-lymphoid cells with a nuclear size equal to or exceeding normal histiocytic nuclei. A case of DLBCL of the mandible in an 18 years old male patient is presented. This report discusses this rare malignancy, including clinical presentation, histopathologic features, immunologic profile, treatment and prognosis. Though lymphoma of mandible is rare, it must be considered in differential diagnosis of swellings arising in the region.