Evaluation of validity of Tanaka-Johnston analysis in Mumbai school children.

INTRODUCTION: Estimation of the mesiodistal dimensions of the unerupted canines and premolars in the early mixed dentition is a necessary diagnostic aid in space management. Tanaka-Johnston analysis was developed for North American children. Anthropological study reveals that tooth size varies among different ethnicities. The present study was performed to evaluate the validity of Tanaka-Johnston method of mixed dentition arch analysis in Mumbai school children. AIMS: (1) To determine the correlation between the sum of the mesiodistal widths of the permanent mandibular incisors and combined mesiodistal widths of the permanent mandibular and maxillary canines and premolar in Mumbai school children. (2) To examine the applicability of Tanaka-Johnston method of prediction. MATERIALS AND METHODS: Dental casts of maxillary and mandibular arches of 300 children, 147 boys and 153 girls within the age group of 12-15 years, with permanent dentitions were fabricated. The mesiodistal crown dimensions of teeth were measured with a dial caliper. Tanaka-Johnston method of mixed dentition arch analysis was performed for the study population, and statistical analysis was done. STATISTICAL ANALYSIS USED: Descriptive statistics including the mean, standard deviation, range, and standard error were calculated and tabulated. RESULTS: Tanaka-Johnston's equation when applied to the data available for Mumbai school children, it was observed that it slightly overestimates the tooth size. CONCLUSIONS: (1) There was a positive correlation between the width of mandibular incisors and mandibular and maxillary canines and premolars. (2) The Tanaka-Johnston prediction method was not accurate for a sample of Mumbai school children.

The oral health status of institutionalized children that is, Juvenile home and orphanage home run by Gujarat state Government, in Vadodara city with that of normal school children.

BACKGROUND: Dental Caries and Periodontal Diseases are widespread and virtually everybody suffers from them, and in global scenario dental caries are the most prevalent oral diseases among children. Observation home serve as temporary holding facilities of juvenile and orphans who are arrested by police or found to be living in neglected. AIM: The aim of the study was to evaluate oral health status (caries prevalence, dmft, DMF, OHI index) of the institutionalized children that is, juvenile home, orphanage home run by Gujarat Government in Vadodara city with that of normal school children. DESIGN: Cross-sectional study was conducted among the 166 children residing in juvenile and orphanage home with 384 school children. RESULTS: The prevalence of dental caries was higher among the school going children (62.12%) with juvenile group having (52.4%) but the oral hygiene was poor among the juvenile group children with respect to those of school going group. CONCLUSION: It is concluded from the present study that juvenile group children had lower caries prevalence but poor oral hygiene status in contrast to school going children.

Crown fracture of the mandibular second primary molars in a 4-year-old child.

Dental traumas are highly prevalent lesions in primary teeth, but crown root fractures are rare. Mostly anterior tooth segment is more commonly involved. Posterior crown root fractures are very rare. A 4-year-old girl reported to our paediatric dentistry department with a 10-day history of severe pain and discomfort in both right and left posterior teeth region. The child was suffering from severe and continuous pain and was unable to chew food. After an examination a fracture was noticed in intraoral periapical radiograph and treatment plan was decided to preserve the affected teeth.

Bilateral fusion of primary mandibular lateral incisors and canines: A report of a rare case / Fusão bilateral de dentes decíduos incisivo e canino inferior: relato de um caso raro

Purpose: Synodontia or fusion is a developmental anomaly of shape of tooth formed by union of two independently developing primary or secondary teeth. Prevalence of tooth fusion is estimated at 0.5-2.5% in the primary dentition and less in permanent dentition. The bilateral type of fusion in the primary dentition is rare and is about 0.02%. This paper describes a rare case of bilateral fusion of primary mandibular lateral and canine teeth. Case description: An 8 year old girl had a complaint of unusually large sized teeth in her mandible. After physical examination and use of periapical radiographs and study models bilateral fused teeth in the mandibular lateral incisor and canine region was diagnosed. Conclusion: The bilateral fusion of primary mandibular lateral and canine teeth is a rare condition and should be carefully evaluated to diagnose any associated pathology.

Objetivo: Sinodontia ou fusão é uma anomalia de desenvolvimento da forma do dente formado pela união de dois dentes decíduos ou permanentes em desenvolvimento de forma independente. A prevalência de fusão dental é estimada em 0,5 a 2,5% na dentadura decídua e menor na permanente. O tipo de fusão bilateral na dentadura decídua é rara e aproximadamente de 0,02%. Este artigo descreve um caso raro de fusão bilateral de dentes decíduos incisivos laterais e caninos inferiores. Descrição do caso: Uma menina de 8 anos de idade tinha uma queixa clínica de dentes de tamanho grande anormal em sua mandíbula. Após exame físico e uso de radiografias periapicais e modelo de estudo, a fusão bilateral de dentes decíduos incisivos laterais e caninos inferiores foi diagnosticada. Conclusão: A fusão bilateral de dentes decíduos incisivos laterais e caninos na mandíbula é uma condição rara e deve ser cuidadosamente avaliada para diagnosticar quaisquer patologias associadas.