YouTube™ as an information resource for orthognathic surgery.

OBJECTIVE: To investigate video content on YouTube™ related to orthognathic surgery. MATERIALS AND METHODS: YouTube™ was searched using the terms: orthognathic surgery; orthodontic surgery; jaw surgery; jaw corrective surgery. Inclusion criteria included English language; primary content orthognathic surgery and acceptable audio-visual quality. Videos were sorted into the top 50 for each search term by view-count and into an overall top 60 from the four searches. The following parameters were recorded for each video: number of views; likes; dislikes; source; primary intention. Each was classified according to information content as 'excellent', 'moderate' or 'poor'. A pre-determined list of orthognathic surgery-related information domains was also evaluated. RESULTS: The top 60 videos had a combined total of 6,986,141 views. Videos predominantly involved patients describing their personal experience (41.67%) with the majority positively biased (61.67%). Only 9.17% of videos were classified as having excellent general information content and 55.83% were rated as poor. Surgical procedures were described in 45% whilst the need for pre- and post-surgical orthodontics was discussed in 33% and 16%, respectively. Post-operative paraesthesia was discussed in 17.5% of videos outcome. CONCLUSIONS: Video content on YouTube™ relating to orthognathic surgery is substandard and patients should be advised to view it with caution.

Effects of playing a wind instrument on the occlusion.

INTRODUCTION: There is a popular belief among some musicians that playing a wind instrument regularly can affect the position of the teeth. The aim of this study was to investigate this hypothesis. METHODS: A cross-sectional observational study was carried out, comparing the occlusions of 170 professional musicians selected from 21 orchestras and organizations in the United Kingdom. The subjects were subdivided according to type of instrument mouthpiece and included 32 brass players with large cup-shaped mouthpieces, 42 brass players with small cup-shaped mouthpieces, and 37 woodwind players with single-reed mouthpieces. Fifty-nine string and percussion players formed the control group. Impressions were taken of the teeth of each subject, and occlusal parameters were assessed from the study casts. The results were analyzed by using analysis of variance (ANOVA) and chi-square tests. RESULTS: No statistically significant differences were found in overjet (P = 0.75), overbite (P = 0.55), crowding (maxillary arch, P = 0.31; mandibular arch, P = 0.10), irregularity index (maxillary arch, P = 0.99; mandibular arch, P = 0.16), and the prevalence of incisor classification (P = 0.15) between the wind instrument players and the control group. However, the large-mouthpiece brass group had a significantly higher prevalence of lingual crossbites in comparison with all other groups. CONCLUSIONS: Playing a wind instrument does not significantly influence the position of the anterior teeth and is not a major etiologic factor in the development of a malocclusion. However, playing a brass instrument with a large cup-shaped mouthpiece might predispose a musician to develop lingual crossbites or lingual crossbite tendencies.