Determination of Teeth Size in a Group of Egyptian Children. A Cross Sectional Study

Determination of The Combined Mesio-Distal Widths of The Permanent Mandibular Incisors and That of The Maxillary and Mandibular Canines and Premolars in a Group of Egyptian Children in Rural Areas of Sohag Governorate: A Cross Sectional Study

Determination of The Combined Mesio-Distal Widths of The Permanent Mandibular Incisors and That of The Maxillary and Mandibular Canines and Premolars in a Group of Egyptian Children in Rural Areas of Sohag Governorate: A Cross Sectional Study

Study Settings:

• Students will be randomly selected from preparatory schools in rural areas of Sohag governorate, seated in the school lap or an empty classroom.
• Clinical examination will be made in the daylight using disposable diagnostic sets (mirror, and explorer). No diagnostic radiographs will be taken.
• Operator: Master degree's student in Pediatric Dentistry and Dental Public Health.
• Full mouth alginate impression will be taken and study models will be poured within one hour with hard dental stone for each subject.
• Mesio-distal widths of both maxillary and mandibular permanent incisors, canines, first and second premolars will be measured from the study models using digital caliper according to the method described by(Moorrees & Reed, 1964) by measuring the greatest distance between the contact points on the proximal surfaces holding the caliper parallel to both occlusal and vestibular surfaces of the tooth.

Inclusion Criteria:

1. Patients who are apparently medically free from any systemic disease.
2. Patients aged between 12-15 years.
3. Full set of fully erupted permanent dentition from left 1st permanent molar to right 1st permanent molar.
4. No apparent orthodontics problem.

Exclusion Criteria:

1. Patients with craniofacial developmental abnormality.
2. Any sensitivity or adverse reactions to any of used materials.
3. Patients who refused to participate in the study.
4. Teeth with severe malalignment or rotation.
5. Teeth with any inaccuracy caused by impression taking, pouring impressions with dental stone or any damage or breakage while the dental casts had been stored.
6. Teethwith notable wear, proximal decay, restorations, enamel hypoplasia or crown fracture.
7. Teeth with developmental anomalies such as microdont teeth, teeth with extra cusps or big talon cusps, or peg or conical shaped teeth.
8. Supernumerary or supplemental teeth (if present)