Malocclusion is an abnormal occlusion with regard to the position of the teeth and shows varied prevalence in different parts of the world. Crowding and spacing of teeth are two common features of malocclusion and are described as a lack or excess of space between the teeth. This study was conducted to evaluate the prevalence of crowding and spacing of teeth and their severity among Malaysian adults aged 18–25 visiting our institution, as well as their association with gender. A total of 150 adult patients were evaluated for crowding and spacing using the Boley caliper intra-orally. The severity of crowding and spacing was also noted. The study included Malay (70%), Chinese (25%), and Indian (5%) participants. Descriptive statistics were done and it was observed that crowding was more common in the mandibular arch (80%), whereas spacing was a common malocclusion found in the maxilla (14%). Based on the severity of crowding, it was observed that mild crowding (1-3 mm) was most frequent in both the maxilla (45%) and mandible (53%). However, in terms of spacing, moderate spacing (4-6 mm) (5.3%) was common in the maxilla; whereas in the mandible, mild spacing (1-3 mm) (9.3%). The Chi square analysis did not reveal any significant association between crowding and spacing with gender. Based on these results, it can be concluded that crowding is a common malocclusion affecting the mandibular arch, whereas spacing is common in the maxilla in the young Malaysian population visiting our institution. Both of these malocclusions were of the milder type and did not show any association with gender in our study population Studies conducted on a larger population are required to determine the association of these traits between genders and races in our population.
Malocclusion

This study aims to determine the prevalence of low birth weight in Sugh El-Chmis /Alkhoms -Libya and the associated factors with the low birth weight of the baby. A cross-sectional study was performed in Libya, in 2015 using a pre-tested self-administered questionnaire on a stratified sample of 408 pregnant women. Descriptive, bivariate and multivariate analyses were carried out for statistical analysis. Out of a total of 408 respondents, the prevalence of low birth-weight baby was 23.5%. The most of participants were aged between 19-26 years old (49%). Dietary supplements (folic acid, iron, omega and vitamin A, D, E, S, M), natural fruits (apple, grape, watermelon, plum, figs, strawberry and peaches), all milk and dairy products (milk, cheese and yogurt), meat, fish, egg, legumes were significantly associated with baby weight (P ?0.05) using bivariate analysis. Furthermore, other factors such as culture and lifestyle and popular diets such as breakfast time, additional meal, soft drink, stimulants, barley wheat brown bread and dates also closely associated with the low-birth weight of new-borns (P ?0.05). The intake of dietary supplements and nutrient-rich food for pregnant women influenced on the birth weight in Sugh El-Chmis /Alkhoms- Libya. Therefore, awareness regarding intake of dietary supplements and nutrient-rich food is highly recommended.