ABSTRACT
Background: This study was conducted to evaluate the differences in soft tissue as well as dental compensation in skeletal Class II div 1 malocclusion. Methods and Materials: The study sample consists of pre-treatment lateral cephalograms of 100 subjects of both gender having skeletal Class II and dental Class II div 1 malocclusion visiting the Department of Orthodontics and Dentofacial Orthopaedics, Bharati Vidyapeeth Dental College, and Hospital Navi Mumbai. Cephalograms of the subjects fulfilling the inclusion criteria were included in this study. Results: This research was conducted to assess dental and soft tissue compensation in skeletal Class II div 1 malocclusion and comparative assessment of lip prominence measured from two soft tissue vertical reference lines. The 100 subjects selected randomly out of which 44 men and 56 women, age ranging from 18 to 35 years. Conclusion: ARNETT'S method and PROFFIT'S method showed statistically significant as P < 0.0001. PROFFIT'S method and LEGAN-BURSTONE'S method showed statistically significant as P < 0.0001.
ABSTRACT
Botulinum toxin and derma fillers have made their way into dentistry in recent years for both cosmetic and medicinal purposes. They are here to stay, and with more and more intraoral applications, they are quickly becoming a standard element of dental treatment. They offer the most important, minimally invasive procedures at a cheap cost and with little to no downtime. Botox and derma fillers are used together for rejuvenation and esthetic operations nowadays. The mechanism of action and numerous uses of Botox and derma fillers in the maxillofacial areas, as well as their future implications in dentistry are discussed in this article.
ABSTRACT
BACKGROUND: The aim of present study was to investigate the difference of torque control during intrusive force on upper central incisors with normal, under and high torque in lingual and labial orthodontic systems through 3D finite element analysis. MATERIAL AND METHODS: Six 3D models of an upper right central incisor with different torque were designed in Solid Works 2006. Software ANSYS Version 16.0 was used to evaluate intrusive force on upper central incisor model . An intrusive force of 0.15 N was applied to the bracket slot in different torque models and the displacements along a path of nodes in the upper central incisor was assessed. RESULTS: On application of Intrusive force on under torqued upper central incisor in Labial system produce labial crown movement but in Lingual system caused lingual movement in the apical and incisal parts. The same intrusive force in normal-torqued central incisor led to a palatal movement in apical and labial displacement of incisal edge in Lingual system and a palatal displacement in apical area and a labial movement in the incisal edge in Labial systemin. In overtorqued upper central incisor, the labial crown displacement in Labial system is more than Lingual system. CONCLUSIONS: In labial and lingual system on application of the same forces in upper central incisor with different inclinations showed different responses. The magnitudes of torque Loss during intrusive loads in incisors with normal, under and over-torque were higher in Labial system than Lingual orthodontic appliances. Key words:FEM, lingual orthodontics, intrusion, torque control, labial bracket systems.
