background: there have been speculations about the effects of hormonal changes and socio-demographic factors on periodontal health during pregnancy.objective: according to the lack of sufficient epidemiologic information about the periodontal status of pregnant women in yazd, this study was accomplished to determine the changes of community periodontal index for treatment needs (cpitn) during p...

The reflectormirror is the most important component of an astronomical optical telescope. This chapter provides discussions on the requirements for astronomical optical mirrors; the ways to reduce mirror weight, mirror cost, and mirror materials; the methods of mirror figuring, polishing, and surface coating; the design of mirror support mechanism; the concept of mirror seeing; and the stray li...

PURPOSE Maxillofacial prostheses are usually fabricated on the basis of impressions made with dental-impression material. The extent to which the prosthesis reproduces normal facial morphology depends on the clinical judgment of the individual fabricating the prosthesis. This paper describes a computer-aided design and manufacturing (CAD/CAM) system for the fabrication of maxillofacial prosthes...

The purpose of this study was to determine whether the association between previous dental behavior and play ~behavior as reported in a previous investigation in preschool children could be duplicated in a group of schoolage children. The study consisted o~ 27 subjects divided into two experimental groups: a group of appropriatelybehaving children during a restorative dental appointment and a g...

UNLABELLED The purpose of this study was to evaluate the current status of dental caries in 11 to 13 year-old schoolchildren residing in Sucre Municipality, Miranda State, and the impact of the non-cavitated lesion on the caries index. Twelve elementary schools were included in this study and a sample of 1484 children was examined using artificial light, a #5 mirror and a #23 probe. The criteri...

The aim of this study was to assess hypoplasia in permanent maxillary anterior dentition. The sample for this study consisted of 60 subjects divided into two groups: Group 1 consisted of 30 subjects with complete unilateral cleft lip and palate. Group 2 consisted of 30 subjects with complete bilateral cleft lip and palate (both males and females). Informed consent was taken from all patients. I...

The most comfortable positioning for a dental operating microscope (DOM) during nonsurgical endodontics for operators was investigated. Operators were categorized into 3 groups according to height. We recorded the time taken to obtain magnified images, and the angles of binoculars, microscope body, and the mirror to floor surfaces. For the group of shorter operators, observations were also made...

Oral surgeries involving the extraction of cheek teeth have a very high complication rate. Complications have been reported at 32% and as high as 70%. Recognition before occurrence helps the veterinarian to reduce the incidence and be prepared for a complication(s). Common indications for extraction include dental fracture, end-stage periodontal disease, severe decay/cavity, and periapical absc...