Wei-ran Li

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BACKGROUND The accuracy of three-dimensional (3D) reconstructions from cone-beam computed tomography (CBCT) has been particularly important in dentistry, which will affect the effectiveness of diagnosis, treatment plan, and outcome in clinical practice. The aims of this study were to assess the linear, volumetric, and geometric accuracy of 3D(More)
OBJECTIVE To investigate the different changes after maxillary protraction between the cleft and non-cleft patients with anterior crossbite. METHODS Prospective controlled clinical trial was carried out. Eighteen patients (aged 9.6 +/- 1.2 years) with unilateral cleft lip and palate (UCLP) were chosen as the experimental group. Eighteen non-cleft patients(More)
OBJECTIVE To assess the consistency of the subjective evaluation of malocclusion severity by the Chinese orthodontic experts. METHODS Sixty-nine Chinese orthodontic experts subjectively evaluated the malocclusion severity for 120 cases which were selected randomly from 6 University orthodontic clinics by checking each case's pretreatment records including(More)
OBJECTIVE To investigate the agreement of subjective evaluation of orthodontic treatment outcome and to analyze possible factors that may be related to it. METHODS As a randomized clinical trial, with Angle's classification as a stratification factor, our study contained 48 cases with integrity data, which were randomly extracted from 806 orthodontic(More)
INTRODUCTION Orthodontics in China has developed rapidly, but there is no standard index of treatment outcomes. We assessed the validity of the American Board of Orthodontics Objective Grading System (ABO-OGS) for the classification of treatment outcomes in Chinese patients. METHODS We randomly selected 108 patients who completed treatment between July(More)
OBJECTIVE To investigate the clinical features of invasive fungal disease (IFD) in children without underlying diseases. METHODS The clinical data of 49 children without underlying diseases who were diagnosed with IFD were retrospectively studied. RESULTS Fungal pathogens were detected in 37 (76%) out of 49 patients, including Cryptococcus neoformans(More)
BACKGROUND Cleidocranial dysplasia (CCD) is an autosomal dominant disease that affects the skeletal system. Common symptoms of CCD include hypoplasia or aplasia of the clavicles, delayed or even absent closure of the fontanels, midface hypoplasia, short stature, and delayed eruption of permanent and supernumerary teeth. Previous studies reported a(More)
PURPOSE To compare the treatment effects in patients with maxillary protrusion between implant anchorage and traditional intraoral anchorage. METHODS Thirty patients with maxillary protrusion treated with bilateral maxillary first premolars extractions and high anchorage were selected. They were randomly divided into implant anchorage group and(More)
OBJECTIVE To correlate the objective cephalometric measurements with subjective facial esthetics in patients with bimaxillary protrusion. MATERIALS AND METHODS The sample consisted of 60 Asian-Chinese patients with bimaxillary protrusion who met the inclusion criteria. The facial esthetics of posttreatment profile and the change of profile on standardized(More)
OBJECTIVE To analyze the results of multiple Chinese orthodontic specialists' subjective evaluation of orthodontic treatment outcome, to investigate the relevance of different experiment items and to explore the weight of each monomial material. METHODS As a randomized clinical trial, with six orthodontic treatment centers and Angle's classification being(More)