Tooth wear patterns in subjects with class II division 1 and class II division 2 malocclusion.

INTRODUCTION: There is an increasing trend of malocclusion among children, so it is necessary to identify the cause of the tooth wear so that the orthodontist can treat the patient accordingly. It is necessary to determine the wear patterns of different malocclusions. Therefore, the aim of our study was to compare the patterns of tooth wear among two categories of Angle's class II malocclusions, i.e. class II division 1 and class II division 2. MATERIAL AND METHODS: The sample consisted of 100 pretreatment orthodontic patients in the age group of 15-25 years with Angle's class II malocclusion and were divided into following two groups: (a) Group 1: 50 subjects with full cusp Angle's class II division 1 malocclusion. (b) Group 2: 50 subjects with full cusp Angle's class II division 2 malocclusion. Clinical examination of the patients for tooth wear was done supplemented with dental casts, intraoral photographs and intraoral radiographs. Then each group was assessed for severity of tooth wear according to modified tooth wear index (TWI) given by de Carvalo Sales-Peres et al. Scores were subjected to statistical analysis and the pattern of tooth wear among the two groups of class II malocclusion was compared. A correlation between the gender of the patient and the tooth wear was also determined. The level of statistical significance (p-value) was less than 0.05. RESULTS: The class II division 1 subjects showed statistically greater wear on the occlusal surfaces of the maxillary canines, first, second premolar and first molar, and the occlusal surfaces of the mandibular first molars. The class II division 2 subjects showed statistically greater tooth wear on the labial surfaces of the mandibular central and lateral incisors, the incisal surface of maxillary and mandibular incisors, the palatal surfaces of the maxillary second premolars, first and second molars. In class II division 1 subjects, the tooth wear was significant on the buccal surface of maxillary canines, occlusal surface of mandibular first premolars and second molars in males. In class II division 2 subjects, the tooth wear was significant on the buccal surface of mandibular canines, palatal surface of maxillary central incisors in females and palatal surface of maxillary first premolars in males. CONCLUSIONS: The results of this study suggested that the two categories of Angle's class II malocclusion have different tooth-wear patterns. The wear patterns were different in both the sexes. Men showed higher occlusal wear scores than did women. The findings also suggest that tooth wear in relation to malocclusion is physiologic and is due to dissimilar interocclusal arrangement.

Changes in Cranial Base Morphology in Class I and Class II Division 1 Malocclusions.

INTRODUCTION: The cranial base plays a key role in craniofacial growth; it helps to integrate spatially and functionally different patterns of growth in various adjoining regions of the skull such as components of the brain, the nasal and oral cavity and the pharynx. The aim of this study was to evaluate the difference in cranial base flexure between skeletal and dental Class I and Class II division 1. MATERIALS & METHODS: Lateral cephalometric radiograph, of Class I and Class II with an average growth pattern were analyzed and compared. A total of 103 patients having class I (n=52) and class II (n=51) malocclusion, were taken from Department of Orthodontics, Rajasthan Dental College & Hospital, Jaipur. Cranial base angle (N-S-Ar) and ANB were measured on pre treatment lateral cephalograms. RESULTS: In this study cranial base angle did not show statistically significant difference between the two groups studied. CONCLUSION: In the assessment of orthodontic problems involving anteroposterior malrelationships of the jaws, the problem is usually the result of size, form and position of the jaw. The present study failed to find any differences in cranial base angle between sagittal malocclusions. How to cite this article: Agarwal A, Pandey H, Bajaj K, Pandey L. Changes in Cranial Base Morphology in Class I and Class II Division 1 Malocclusion. J Int Oral Health 2013; 5(1):39-42.

Effect of fluoridated toothpaste on white spot lesions in postorthodontic patients.

INTRODUCTION: This article illustrates a new treatment approach and evaluates the effect of use of fluoridated toothpaste on the remineralization of white spot lesions (WSLs) diagnosed at debonding. MATERIALS AND METHODS: Thirty-one orthodontic patients (mean age: 19.6 years), with a minimum of four WSLs on the buccal surfaces of the maxillary and mandibular incisors, canines, premolars and first molars after orthodontic therapy, were enrolled in a double-blind, randomized, longitudinal trial lasting 8 weeks. The subjects were divided into two groups using fluoridated toothpaste (test group, n = 31) and nonfluoridated toothpaste (control group, n = 31). A custom-made mouth tray, covering the maxillary dentition, was used while brushing with the fluoridated toothpaste three times per day. Maxillary dentition acted as control and mandibular as the test. The WSLs were scored by using the International Caries Detection and Assessment System (ICDAS II) index, at baseline and 8 weeks after debonding. RESULTS: The ICDAS II index of the WSLs decreased in the test group in the mandibular dentition but not on the maxillary dentition during the 8-week trial (p < 0.0001). There was also a slight improvement in the control group (not significant). CONCLUSION: The frequent use of fluoridated toothpaste had a remineralizing effect on WSLs. How to cite this article: Agarwal A, Pandey H, Pandey L, Choudhary G. Effect of Fluoridated Toothpaste on White Spot Lesions in Postorthodontic Patients. Int J Clin Pediatr Dent 2013;6(2):85-88.