Deep overbite has potentially detrimental effects on mandibular and temporomandibular joint function and periodontal health as well as esthetics. Incisor intrusion can be achieved with various treatment modalities. The most commonly used is the utility arch technique. In mini-implant anchorage system, forces can be applied to produce tooth movement in any direction without detrimental reciprocal forces and does not depend on patient cooperation. Very few studies give a direct comparison between the effects of different types of incisor intrusion mechanics.The aims and objectives of the study were to determine the amount of true incisor intrusion and torque change of the incisors and the molar extrusion attained with mini-implants and utility arch during a 6-month observation period. Fourteen patients with deep bite were selected for the study and were divided equally into the two groups which were treated with utility arch, reinforced with transpalatal arch and miniimplants. Mini-implants were found to be superior as compared to utility arch for intrusion of incisors and there was minimal change of incisor inclination with microimplants. The difference in the extrusion seen is not statistically significant.

No abstract

Background and objectivesOrthodontic diagnosis and treatment planning for growing children must involve growth prediction, especially in the treatment of skeletal problems. Studies have shown that a strong association exists between skeletal maturity and dental calcification stages.The present study was therefore taken up to provide a simple and practical method for assessing skeletal maturity using a dental periapical film and standard dental X-ray machine, to compare the developmental stages of the mandibular canine with that of developmental stages of modified MP3 and to find out if any correlation exists, to determine if the developmental stages of the mandibular canine alone can be used as a reliable indicator for assessment of skeletal maturity.MethodsA total of 160 periapical radiographs (80 males and 80 females), of the mandibular right canine and the MP3 region was taken and assessed according to the Dermirjian’s stages of dental calcification and the modified MP3 stages.ResultsThe correlation between the developmental stages of MP3 and the mandibular right canine in male and female groups, is of high statistical significance (p = 0.001). The correlation coefficient between MP3 stages and developmental stages of mandibular canine and chronological age in male and females was found to be not significant.ConclusionsThe correlation between the mandibular canine calcification stages and MP3 stages was found to be significant. The developmental stages of the mandibular canine could be used very reliably as a sole indicator for assessment of skeletal maturity.

No abstract

The use of functional jaw orthopedics, at the correct time during growth, can ultimately result in malocclusion patients achieving a broad beautiful smile, an excellent functional occlusion, a full face with a beautiful jaw line and lateral profile. Following is a case report of a young growing individual with mandibular retrognathia. Treatment was planned in two stages with the use of twin block during the first phase for correction of skeletal malocclusion and forward positioning of the mandible, followed by the second phase of fixed pre-adjusted edgewise orthodontic appliance for camouflaging the remaining skeletal discrepancy and achieving a stable harmonious occlusion.