A Radiographic Study of the Root-to-Crown Ratio of Natural Permanent Teeth in 81 Saudi Adults.

BACKGROUND The ratio between a tooth root and its crown is an essential diagnostic parameter that determines treatment options. This radiographic study used panoramic dental radiographs or orthopantograms to measure the mean root (R)-to-crown (C) ratios (R/C) of the permanent teeth in 81 Saudi adults. MATERIAL AND METHODS A total of 81 panoramic radiographs of Saudi adult patients (40 males and 41 females) previously treated in the College of Dentistry, Saudi Arabia, aged 16-35 years, were selected.

Prevalence of Malocclusion among Male School Children in Riyadh City.

Background: Malocclusion is defined as irregularity of the teeth or a molar relationship between the dental arches beyond the range of what is accepted as normal.

Aim: To determine the prevalence of malocclusion among male school children aged 12-15 years old in Riyadh, Saudi Arabia.

Materials And Methods: Five hundred (500) school children in Riyadh city, Saudi Arabia with an age of 12-15 years participated in this study.

Effect of Luting Cements On the Bond Strength to Turkom-Cera All-Ceramic Material.

Background: The selection of the appropriate luting cement is a key factor for achieving a strong bond between prepared teeth and dental restorations.

Aim: To evaluate the shear bond strength of Zinc phosphate cement Elite, glass ionomer cement Fuji I, resin-modified glass ionomer cement Fuji Plus and resin luting cement Panavia-F to Turkom-Cera all-ceramic material.

Materials And Methods: Turkom-Cera was used to form discs 10mm in diameter and 3 mm in thickness (n = 40).