Potential use of optical coherence tomography in oral potentially malignant disorders: in-vivo case series study.

BACKGROUND: Evidence confirms that the use of Optical Coherence Tomography (OCT) in oral medicine can be a reliable aid for the diagnosis and management of Oral Potentially Malignant Disorders (OPMDs). Several authors described the ability of this system to detect the structural changes of the epithelia involved by the OPMDs. The purpose of this case series is to provide a suggestion for interpretation of OCT images from different OPMDs, compared to OCT images of healthy tissues. METHODS: A sample of 11 OPMDs patients was recruited and analyzed with OCT. The images obtained were then compared with an OCT repertoire image. In this work the reflectance degree was considered, together with the analysis of the increased/decreased thicknesses of the various layers. Keratin Layer (KL), Epithelial Layer (EP), Lamina Propria (LP), Basal Membrane (BM) assessment, for each lesion, was performed. RESULTS: OCT measurements of KL, EP and LP layers, together with BM assessing, should aid the physicians to recognize and describe different oral lesions, relating them to the corresponding oral pathology. CONCLUSION: More studies like this, on larger samples, are needed to validate the results and provide, in the future, a kind of manual that could guide clinicians to correctly interpret the OCT images in relation to the causing pathologies. TRIAL REGISTRATION: The present trial has been registered with ISRCTN (#17,893,224).

In vivo evaluation of traumatic and malignant oral ulcers with optical coherence tomography: A comparison between histopathological and ultrastructural findings.

Ulcers in the oral mucosa is a relatively common, although challenging, entity in oral medicine, as it can arise due to a wide range of traumatic, infective, autoimmune, and neoplastic disorders. Although histopathology of lesional and peri­lesional tissues remains the gold standard for persistent oral breaching, optical coherence tomography (OCT) has been recently suggested as a potential ally to enhance the early or non-invasive diagnosis of likely causation. The aim of the present study was to provide an in-vivo OCT analysis and description from a sample of 70 patients affected by traumatic or neoplastic-related ulcers, located on the buccal mucosa, tongue or gingiva, and compare the OCT data with those of 20 patients with healthy oral mucosa. OCT dynamic scans revealed clear distinction of epithelial layer (EP), lamina propria (LP) of healthy buccal mucosa, gingiva, and tongue as well as allowing observation of the keratin layer in gingiva, and the subepithelial vascularization of each site. Traumatic lesions had an EP of reduced in thickness, with an irregular, if not disrupted surface. Interestingly, LP seemed to preserve its reflectiveness and vascularization only in the traumatic lesions. Among neoplastic lesions, regardless their site of onset, both EP integrity/homogeneity, and LP reflectiveness/vascularization were lost and unrecognizable when compared to their healthy counterparts. OCT scanning allowed some differentiation between traumatic and malignant ulcers and thus may a useful and non-invasive means of determining the need and/or urgency of histopathological examination of oral lesions.

A Randomized Controlled Trial on Efficacy of Surgical Excision of Nondysplastic Leukoplakia to Prevent Oral Cancer.

The aim of this study was to evaluate the effectiveness of surgical excision to prevent cancer in patients with nondysplastic oral leukoplakia (OL). This study was the first randomized controlled clinical trial comparing surgical treatment with standard care in this group of patients. Patients were divided into two groups. The first group underwent standard care, that is smoking counseling, follow-up visits every 6 months, and control biopsy when indicated. The second group underwent surgical excision, together with standard care. Oral cancer onset was the primary outcome; secondary outcomes included healing, recurrence after surgery, onset of new lesions, and worsening of the primary lesions. The differences in distribution of the patients' and lesions' characteristics were investigated through nonparametrical tests (Wilcoxon rank-sum and Fisher exact). Univariate and multivariate logistic regressions have been performed to estimate the odds ratio of the treatment on the recurrence or worsening of the lesions. A total of 260 patients took part in the study of which 132 were women (50.8%); during the follow-up period, two subjects developed oral cancer, one for each arm. Surgical treatment, when compared with standard care, was associated with a lower probability of the treated zone to remain healed during the follow up period (OR = 7.43; 95% confidence interval, 2.96-22.66). In conclusion, it is possible to assumed that regular clinical follow-up could be considered a reliable standard of care among patients with nondysplastic OLs.Prevention Relevance: Oral white patches can transform into cancer and none has provided clinical guidelines to prevent it. For the first time ever, we have showed that the clinical follow up of non dysplastic lesions was able to provide benefits if compared with surgical excision.

Evaluating the Suitability and Potential Efficiency of Cannabis sativa Oil for Patients with Primary Burning Mouth Syndrome: A Prospective, Open-Label, Single-Arm Pilot Study.

OBJECTIVE: To evaluate the use of a Cannabis sativa oil in the management of patients diagnosed with primary burning mouth syndrome (BMS). DESIGN: Prospective, open-label, single-arm pilot study. SETTING: University hospital. SUBJECTS: Seventeen patients with diagnosed BMS were included. METHODS: Subjects were treated for 4 weeks with a full cannabis plant extract, which was prepared from standardized plant material (cannabis flos) in specialized pharmacies by means of Romano-Hazekamp extraction and was diluted in oil (1 g of cannabis in 10 g of olive oil). The primary outcome was the change in pain intensity (assessed by the visual analog scale, Present Pain Intensity scale, McGill Pain Questionnaire, and Oral Health Impact Profiles) at the end of the protocol and during the succeeding 24 weeks; the neuropathic pain was also investigated with a specific interview questionnaire (DN4-interview [Douleur Neuropathique en 4 Questions]). Levels of anxiety and depression were considered as secondary outcomes, together with reported adverse events due to the specified treatment. RESULTS: Subjects showed a statistically significant improvement over time in terms of a clinical remission of the oral symptoms. Levels of anxiety and depression also changed statistically, displaying a favorable improvement. No serious reactions were detailed. None of the patients had to stop the treatment due to adverse events. CONCLUSIONS: In this pilot evaluation, the C. sativa oil provided was effective and well tolerated in patients with primary BMS. Further bigger and properly defined randomized controlled trials, with different therapeutic approaches or placebo control, are needed, however.