Kajian ini bertujuan untuk mengesahkan item instrumen Kemenjadian Pelajar (KP) tingkatan enam. Sebanyak 418 orang responden terdiri daripada pelajar tingkatan enam dari seluruh negeri Sabah telah dipilih sebagai sampel kajian. Terdapat enam pemboleh ubah KP yang diuji dalam kajian ini merangkumi pengetahuan, kemahiran berfikir, kemahiran kepimpinan, kemahiran dwibahasa, etika dan kerohanian serta identiti nasional. Analisis data kajian dijalankan secara deskriptif (Cronbach alpha) dan analisis faktor pengesahan (CFA) menggunakan perisian Statistical Package for Social Sciences (SPSS) dan Structural equation modeling (SEM). Dapatan kajian menunjukkan nilai Alpha Cronbach berada pada klasifikasi tinggi dan sangat tinggi melebihi 0.70. Hasil analisis model pengukuran peringkat kedua kemenjadian pelajar adalah sepadan dan boleh diterima berdasarkan penyelesaian enam pemboleh ubah kajian. Kajian juga mencadangkan model pengukuran 19 item soalan untuk mengukur tahap kemenjadian pelajar.
Amelogenesis imperfecta (AI) is a hereditary disorder resulting in generalized defects in the enamel. The case reported here is of a seven-year-old male child with yellow color of all his teeth. Two of his primary molars were extracted due to dental abscess with advanced root resorption. Histologically hypoplastic enamel layer, positively birefringent, generalized pitting, roughness with irregular general cracked borders were observed. Scanning electron microscope, revealed extensive irregular, disorganized rough superficial enamel layer. The enamel was irregularly decussate with filamentous prisms accompanied by small rounded formations. The morphological and histological examination of the tooth revealed that this patient has the features of AI. For genetic study blood sample were collected from the patient and PCR analysis revealed that there is no mutation in exons 1-7 of AMELX gene on the X chromosome of the patient. Hence, it is probable that the AI of this patient is not X-linked. It is more likely to be an autosomal mutation.
Amelogenesis imperfecta represents a group of dental developmental conditions that are genomic in origin. Hypoplastic AI, hypomineralised AI or both in combination were the most common types seen clinically. This paper describes oral rehabilitation of a 9-year-old Malay girl with inherited hypoplastic AI using transparent thermoforming templates. The defective surface areas were reconstructed to their original dimensions on stone cast models of the upper and lower arches using composite, and transparent thermoform templates were fabricated on the models. The templates were used as crown formers to reconstruct the defective teeth clinically using esthetically matching composite. The usage of the templates allowed direct light curing of the composite, accurate reproducibility of the anatomic contours of the defective teeth, reduced chair-side time and easy contouring and placement of homogenous thickness of composite in otherwise inaccessible sites of the affected teeth.