نتایج جستجو برای: mandibular incisor extraction
تعداد نتایج: 196740 فیلتر نتایج به سال:
OBJECTIVE To predict lower incisor proclination from initial cephalometric values in Class II division 1 patients treated in phase I with the Xbow appliance. MATERIALS AND METHODS Two hundred forty-nine mild to moderate Class II division 1 patients treated with the Xbow appliance as a phase I treatment were considered. Patients were in late mixed dentition or early permanent dentition. Common...
The problem of late mandibular incisor crowding is a well established phenomenon, the cause of which has been the substance of considerable debate over the years. A central issue is the possible role of the third molars though no definitive conclusions have been consistently drawn. This prospective study was designed to investigate the effects of randomly assigned early extraction of third mola...
OBJECTIVE This randomized controlled trial aimed to compare the stability of mandibular arch orthodontic treatment outcomes between passive self-ligating and conventional systems during 6 months of retention. METHODS Fortyseven orthodontic patients with mild to moderate crowding malocclusions not requiring extraction were recruited based on inclusion criteria. Patients (mean age 21.58 ± 2.94 ...
Riga’s papilloma or Cardarelli's apthae describes ulceration on the ventral of the tongue in neonates and infants. It is often associated with natal or neonatal teeth. It may rarely occur in older infants. Failure to diagnose and properly treat this lesion can result in inadequate nutrient intake for the infant. Treatment should begin conservatively and should focus on eliminating the source of...
OBJECTIVE The purpose of this study was to assess the influence of magnification and superimposition of structures on CBCT-generated lateral cephalometric radiographs (LCR) using different segments of the cranium. METHODS CBCT scans of 10 patients were selected. Four LCR were generated using Dolphin Imaging(r) software: full-face, right side, left side and center of the head. A total of 40 im...
INTRODUCTION Relapse of anterior crowding after retention phase is a major complication in orthodontic treatment. It is the most unpredictable phenomena. This study is aimed to compare anterior crowding relapse in patients treated with non-extraction and extraction of upper and lower first premolars related to changes of selected variables. MATERIALS AND METHODS "Irregularity Index" of dental...
Extraction versus non-extraction debate has been a major controversy in orthodontics and it is still continuing since Angle era. Extraction of premolar teeth is the conventional treatment of choice for the management of class I malocclusion cases but in border line cases, orthodontists find difficulty in making a decision particularly in cases with good facial esthetics. However class I maloccl...
Introduction: Since the emergence of normal occlusion concept, selecting an appropriate treatment plan with or without tooth extraction has been a controversial subject. Nowadays, both methods can be successfully used for treatment of patients. However, some clinicians still believe that non-extraction orthodontic treatments have fewer complications. The purpose of this study was to evaluate de...
The purpose of this study was to determine the severity of gingival margin discrepancy affecting the mandibular incisors in children with a single-tooth anterior crossbite. The response of the position of the gingival margin to correction of the crossbite also was investigated. Twenty-two subjects with a single central crossbite and 16 subjects with a single lateral crossbite were identified fr...
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