Wensheng Ma

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OBJECTIVE To investigate the effect of rapid canine distalization through distraction of the periodontal ligament after reducing interseptal bone resistance. METHODS Twenty canines in 11 patients who needed first premolar extractions were involved. A tooth-borne, custom-made distractor was bonded right after the first premolar extraction and the(More)
INTRODUCTION The aim of this study was to determine how sensitive dental specialists and laypeople are to maxillary incisor crowding when viewed from the front. METHODS Computer technology was used to create a series of photographs of the incisors of a smiling woman viewed from the front. The photographs showed varying degrees of maxillary incisor(More)
OBJECTIVE To investigate effects of mandibular advancement device (MAD) therapy for obstructive sleep apnoea hypopnea syndrome (OSAHS) on the genioglossus contractile properties and fibre-type distribution. MATERIALS AND METHODS Thirty 6-month old male New Zealand white rabbits were randomised into three groups: OSAHS, MAD, and controls. Rabbits in Group(More)
This paper proposes a hybrid intelligent method for multi-fault detection of rotating machinery, in which three methods, i.e. including the redundant second generation wavelet package transform (RSGWPT), the kernel principal component analysis (KPCA) and the twin support vector machine (TWSVM), are combined. Firstly, RSGWPT is used to extract feature(More)
OBJECTIVE To evaluate the morphology and position of condylar processes in skeletal Class III adult patients with mandibular deviation. METHODS Twenty skeletal Class III adult patients with mandibular deviation were selected as the deviated group and twenty adults with normal occlusion were selected as the control group. Cone- beam CT (CBCT) scans of(More)
At present, metal/metal oxide composites are considered as potential oxygen reduction reaction (ORR) catalysts for energy-related applications like fuel cells. Here, we fabricated a high-activity, low Pt loading ORR electrocatalyst composed of nanoporous Pt (np-Pt) in intimate contact with lamellar (Mn,Al)3O4 nanosheet (NS). In comparison to Pt/C (Johnson(More)
OBJECTIVE To evaluate the effectiveness of treatment with maxillary protraction with or without rapid palatal expansion (RPE) for skeletal Class III malocclusion in mixed dentition. METHODS A total of 31 children with Class III malocclusion in mixed dentition were selected, and 15 (group A) received maxillary protraction treatment with RPE, the other 16(More)
In acetate buffer solution, the reaction of H2O2 with KI was catalyzed by horseradish peroxidase (HRP) to form I3-. The I3- combined respectively with rhodamine S(RhS), rhodamine 6G(Rh6G), rhodamine B(RhB) and butyl-rhodamine B(b-RhB) to form RhS-I3, Rh6G-I3, RhB-I3 and b-RhB-I3 association particles, resulting in the fluorescence quenching at 580, 580, 554(More)
OBJECTIVE To evaluate the effectiveness of early treatment with the Twin-block appliance for the developing Class II division 1 malocclusion. METHODS A Total of 30 children with Class II division 1 malocclusion, 18 (8 male, 10 female) out of which received treatment with the Twin-block appliance, the other 12 cases (6 male, 6 female) without treatment(More)