A rare case of transmigration of mandibular canine associated with an odontoma.

Transmigration or intraosseous migration of mandibular canine is a very rare phenomenon. Specific aetiology and mechanism of transmigration is still unclear. Majority of these transmigrated canines are impacted, asymptomatic and involve the left mandible. This article describes a rare case of transmigrated mandibular right permanent canine associated with a retained deciduous right canine and an odontoma in a 25-year-old man with a follow-up of 3 years. The present case report also highlights the importance of early diagnosis and periodic monitoring of impacted teeth with panoramic radiography to avoid the occurrence of any associated pathologies and further allow interceptive treatment for possible better results.

Effectiveness of appliance therapy in reducing overjet and open bite associated with thumb sucking habit.

AIM: The aim of this paper was to compare the effectiveness of appliance therapy and reward therapy in reducing overjet and open bite associated with thumb sucking habit. METHODS: Thirty nine subjects (17 males and 22 females) with chronic thumb sucking habit were allocated to three groups: group A (positive reinforcement), group B (modified triple loop corrector), and group C (control). Pre-treatment and post-treatment study casts were evaluated for changes in overjet and open bite. Data from measurements of the three groups were statistically analyzed using a non-parametric Kruskal-Wallis test and Mann-Whitney U tests. All statistical computation was performed with SPSS 15.0 software. Significance was set at 0.05 level. RESULTS: Statistically significant reductions in mean overjet and open bite were seen for the group treated with appliance therapy when compared to other two groups (P<0.05). CONCLUSION: Appliance therapy was significantly more superior in reducing the overjet and open bite associated with thumb sucking habit. Early interception of these habits is recommended to reduce the incidence of malocclusion in children.