Zainul Ahmad Rajion

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OBJECTIVE The purpose of this study was to use three-dimensional computed tomography data and computer imaging technology to assess the skeletal components of the naso-pharyngeal area in patients with cleft lip and palate and to quantify anatomical variations. METHODS CT scans were obtained from 29 patients of Malay origin with cleft lip and palate aged(More)
OBJECTIVE To investigate tooth size and dental arch dimensions in Malays using a stereophotogrammetric system. SETTING AND SAMPLE POPULATION The sample consisted of 252 subjects with ages ranged from 13 to 30 years. MATERIALS AND METHODS Images of dental casts were captured by stereophotogrammetry and selected variables were measured using a(More)
Orofacial clefts, particularly non-syndromic cleft lip with or without cleft palate (CL/P) are the most common craniofacial deformities, affecting one in every 700 to 1000 newborns worldwide. Numerous efforts have been made to understand the etiology of CL/P so as to predict its occurrence and to prevent it from occurring in the future. In the recent years,(More)
Decompressive craniectomy (DC) is a surgical option in managing uncontrolled raised intracranial pressure refractory to medical therapy. The authors evaluate the addition of zygomatic arch (ZA) resection with standard DC and analyze the resulting increase in brain volume using three-dimensional volumetric CT scans. Measurements of brain expansion dimension(More)
AIM To quantify and localise differences in Class I and Class II dental arches in Malay schoolchildren. METHODS The subjects were 50 Malay schoolchildren (Mean age: 15 + 0.7 years) with either Class I (N = 25) or Class II (N = 25) malocclusions. Fourteen homologous landmarks on the upper and lower study models of the subjects were digitised using(More)
AIMS To compare the mesio-distal tooth sizes and dental arch dimensions in Malay boys and girls with Class I, Class II and Class III malocclusions. METHODS The dental casts of 150 subjects (78 boys, 72 girls), between 12 and 16 years of age, with Class I, Class II and Class III malocclusions were used. Each group consisted of 50 subjects. An electronic(More)
OBJECTIVE To investigate anatomical variations and abnormalities of cervical spine morphology in unoperated infants with cleft lip and palate. DESIGN Retrospective cross-sectional investigation of infants born with nonsyndromic cleft lip and palate using computed tomography scans acquired for investigation of a spectrum of clinical conditions. SETTING(More)
OBJECTIVE It is clear that population-specific norms should be used when planning plastic and reconstructive surgery for selected patients. In this study, we aimed to generate nasal and labial reference values by applying a stereophotogrammetric technique. A further aim was to investigate the effect of sexual dimorphism, age-related changes, and the(More)
BACKGROUND The application of three-dimensional computed tomography (3D CT) to analyse craniofacial morphology in individuals with cleft lip and palate (CLP) enables detailed assessments to be made of asymmetry in the region of the cleft and in regions distant from the cleft. The aim of this study was to compare craniofacial morphology in a sample of(More)
BACKGROUND The development of three-dimensional computer imaging has many applications in dentistry, including the analysis of dental casts. AIMS To assess the validity and reliability of a dental stereophotogrammetric imaging system. METHODS The sample consisted of 35 sets of dental costs. Maxillary and mandibular dental crown widths and selected(More)