OBJECTIVE Orthodontic mini-implants (OMI) generate various horizontal and vertical force vectors and moments according to their insertion positions. This study aimed to help select ideal biomechanics during maxillary incisor retraction by varying the length in the anterior retraction hook (ARH) and OMI position. METHODS Two extraction models were constructed to analyze the three-dimentional f...

Introduction: The purpose of this study was to evaluate the prevalence of dental anomalies in a subpopulation of orthodontic patients with agenesis of maxillary lateral incisors (MLI). Methods: The material of the present study included the records of the 1964 orthodontic patients. Panoramic radiographs and dental casts were used to analyze other associated eight dental anomalies, including a...

The term “impacted teeth” refers to dentition that is partly or completely impacted in bone or soft tissue after eruption should have been completed although eruption age is completed not replaced in dental arc. The most commonly impacted teeth in the anterior region are maxillary canines, while the prevalence of impacted maxillary incisors ranges from 0.06% to 0.2%. Impacted maxillary incisors...

INTRODUCTION This study was conducted to determine the efficiency of mini-implants as intraoral anchorage units for en-masse retraction of the 6 maxillary anterior teeth when the first premolars are extracted compared with conventional methods of anchorage reinforcement. METHODS Thirty patients requiring high anchorage after extraction of the maxillary first premolars were selected for this s...

Introduction: Odontomas are the most common type of odontogenic tumors of the oral cavity and are described as one of the contributing factors to tooth impaction. The impaction of the maxillary incisors causes several esthetic and functional problems. A multidisciplinary approach is required for proper planning, surgical pro-cedure, and orthodontic traction of the impacted tooth. Case Presenta...

OBJECTIVE Evaluation of the presence of the maxillary lateral incisor in the cleft in patients with complete unilateral cleft lip and palate treated with the use of various surgical protocols. MATERIAL AND METHODS A retrospective analysis was conducted as regards diagnostic models, panoramic radiographs and tooth images of the cleft of 75 patients with complete unilateral cleft lip and palate...

INTRODUCTION Many researchers have examined the prevalence of dental injuries in children and adolescents. The purpose of this study was to examine the prevalence and incidence of incisor trauma in subjects who participated in a randomized clinical trial designed to investigate early growth modifications in the treatment of Class II malocclusion. METHODS The subjects were randomized to 3 trea...

OBJECTIVES The aim of this study was to evaluate the effects of damping on stress concentration in an impacted incisor. METHODS Damping ratios of maxillary incisors were tested using an in vivo modal testing method. A finite element model of the upper central incisor was established for dental trauma analysis. To assess the effect of damping properties on induced stresses in the traumatized i...

BACKGROUND Molar incisor hypomineralisation is defined as the hypomineralisation of systemic origin of one to four permanent first molars, and frequently associated with affected incisors. Till date, there is no data available on molar incisor hypomineralisation in any parts of Nepal. OBJECTIVE To determine the prevalence and characteristics of Molar incisor hypomineralisation in 7 to 12 year...

This article describes the treatment of a girl in whom anterior trauma during the deciduous dentition had caused a dilacerated maxillary central incisor in the mixed dentition. The dilacerated central incisor was extracted, and a canine was transposed to the extraction site. Canine transposition was performed so that the lateral incisor could be maintained in its normal position. This article d...