Context:Morphological variation in children can be understood by the knowledge of growth and development. The state of dental development can be used in forensic odontology to ascertain the age of an unidentified child.Aims:This study aims to investigate the relationship of the stages of calcification of the permanent mandibular canine, mandibular premolars, and permanent mandibular first and second molars with skeletal maturity using panoramic and hand–wrist radiographs.Settings and Design:This descriptive work was designed as a cross-sectional study.Materials and Methods:The study was conducted on 300 healthy subjects (150 males and 150 females) ranging 7–20 years of age. Demirjian's method and Björk, Grave, and Brown's method were used to correlate teeth calcification and skeletal maturity, respectively.Statistical Analysis Used:Descriptive statistics and Spearman's rank correlation coefficient were used.Results:1. Correlation coefficients between the skeletal maturity stages and the developmental stages of the five teeth ranged 0.461–0.877 for females and 0.480–0.790 for males. 2. The second molar showed the highest and the first molar showed the lowest relationship for female and male subjects in the Indian population.Conclusions:The findings of this study indicate that tooth calcification stages might be clinically used as a maturity indicator of the pubertal growth period.
Von Recklinghausen's disease or type 1 neurofibromatosis (NF-1) is an autosomal dominant condition with a varied clinical expression. Disease manifestations may range from café au lait spots of the skin to severe cosmetic and functional complications that affect bone and nervous tissues. Oral manifestations of NF-1 are common, affecting approximately 72% of patients. Treatment of neurofibromas is surgical resection to solve esthetic or functional problems. The aim of this paper is to report an interesting case of NF-1 with cutaneous lesion of upper lip and middle finger of left hand along with generalized lesions on the entire body.
Aim - The aim of this study was to evaluate and compare the peri-implant strain transmitted through splinted and non-splinted prostheses cemented on implants of two different lengths (8mm and 11.5mm) when subjected to an axial load. Method – The study was conducted on two polypropylene models on which implants of 8mm and 11.5mm length were placed in the molar region. Splinted and non-splinted prostheses were cemented to the implant abutments placed on the implants. Metal jig simulating the anatomy of the opposing tooth was casted and adapted to the prostheses. An axial load of 400N was applied to the assembly using Universal testing machine. The peri implant strain transmitted through these prostheses was recorded using strain gauges attached to Wheatstone bridge circuit. RESULT – The observations showed that implant length and splinting of the prostheses, both significantly affect the peri implant strain as analysed by one way ANOVA statistical test. [F(3,36) = 1882.81 P<0.05]. Lowest peri implant strain was observed in splinted prosthesis cemented on implant with 11.5mm length followed by non-splinted prosthesis on 11.5mm length implant followed by splinted prosthesis on 8mm length implant followed by non-splinted prosthesis on 8mm length implant.
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