Maxillary Molar Intrusion Evaluation using Mini-implants along with Transpalatal Arch Bar

Abstract

ABSTRACTAimThe prospective clinical study was undertaken to evaluate the amount of maxillary molar intrusion achieved during orthodontic treatment using mini-implants along with transpalatal arch bar.Materials and MethodsThe treated group consisted of 10 subjects having over-erupted maxillary molars with mean age of 20.75 years. Mini-implants of 8 mm length and 1.3 mm diameter (Dentos-Absoanchor, Dentos Inc., Korea) were placed in the inter-radicular region between the second premolar and first molar on the buccal side where the molar intrusion was planned. Transpalatal arch bar was placed 5 mm away from the palate. Intrusive force of 100 to 150 gm was applied using prestretched elastic chain. Lateral cephalograms were taken before beginning of molar intrusion and 3 months after the molar intrusion. The intrusion was measured from the distobuccal cusp tip of maxillary first molar to the true vertical and rotation of the mandibular plane was assessed in relation to Go-Me and SN plane. The mean changes in the cephalometric parameters were subjected to paired t-test to determine results under statistical evaluation.ResultsStatistically significant (p < 0.001) amount of molar intrusion was achieved following the usage of mini-implant with a mean value of 1.95 mm and significant anti-clockwise rotation of the mandibular plane (Go-Me) in relation to SN plane (p < 0.001) was seen as a result of molar intrusion.ConclusionThe study revealed that mini-implant served as an efficient source of anchorage for achieving maxillary molar intrusion in correction of malocclusion in vertical dimensions.How to cite this articleGupta G, Rozario JE, Patil AK, Singh RK, Kannan S, Gupta A. Maxillary Molar Intrusion Evaluation using Mini-implants along with Transpalatal Arch Bar. J Contemp Dent 2015;5(3):158-164.