Surgical removal of a broken instrument tip in the mandibular posterior region can be a difficult procedure due to proximity of vital anatomical structures of the region. Moreover, accessibility in that area is another factor that adds onto the difficulty. Thus localization of that foreign object is key in its successful surgical retrieval. Here we present such a case, with its complete management and a careful technique of retrieval.

Discoloration of orthodontic adhesive during the length of orthodontic treatment and after debonding of brackets poses a difficult aesthetic situation for the clinician and the patient. A detailed review of the causes of the discoloration from a clinical perspective is detailed in the article. Demineralization of enamel and penetration of resin tags, enamel cracks, surface defects are the main causes. The type of composite used, its constituents and the curing process also affects the speed and extend of the discoloration of the enamel. Steps the clinician can take reduce the amount of discoloration of enamel like use of a slow speed tungsten carbide burs are explained. Even though some discoloration of enamel is inevitable, steps can be taken to minimize the problem to a negligible proportion.

Trauma remains one of the principal causes of mortality in the world, especially among young adults. The most serious immediate life-threatening complication following maxillofacial trauma is airway obstruction. The onset can be sudden, as with foreign body aspiration, or following soft-tissue damage that can lead at a later stage to airway-compromising edema. The medical literature regarding facial trauma appears to support the hypothesis that maxillofacial trauma alone is rarely life threatening or will not lead to life-threatening conditions unless associated with airway compromise. There are some causes of life threatening complications following trauma to the maxillofacial region such as massive bleeding or undiagnosed cervical spine injury. However, there are some situations that may cause irreversible damage unless immediate operation is undertaken. The almost complete lack of reports dealing with death or irreversible damage in trauma involving the maxillofacial region prompted us to review the mortality following trauma to the maxillofacial region.

This study was designed to assess oral health knowledge, attitudes and practices among secondary schools students in Sana'a city, Yemen. A cross-sectional questionnaire-based study was conducted on (1000) of secondary school students, (500) male students and (500) female students with an age ranged from 16-19 years. A selfadministered structured questionnaire consisting of 24 questions on socio-demographic data, oral health knowledge, attitudes and practices was distributed and collected data was subjected to statistical analysis. The mean knowledge scores for the secondary school students was 72.27 with a statistically significant difference between males and females (P = 0.001). Nearly 75.5% of them reported that regular visits to the dentist are necessary. In contrast, nearly (60.3%) of them visited the dentist when they felt pain and toothache was the most leading reason provided for visiting the dentist (62.1%). Moreover, nearly 42.9% of them reported that fear of needles and drilling was the major reason for their fearing of visiting the dentist. The use of toothbrush and paste was the most oral hygiene method used (78.6%). About 44.6% of them brushed their teeth once per day and 36.8% of them spent one minute for brushing their teeth. Nearly 44.3% of them reported that the time of tooth brushing was before going to bed only. Finally, most of them (74.1%) reported that their parents advised them about the importance of oral hygiene without their watching and did not supervise them. It showed that the students had good oral health knowledge. However, their oral health knowledge, attitudes and practices were bitter in female students than male students.