The aim of the present study was to evaluate the clinical efficacy of platelet-rich fibrin (PRF) in preserving the alveolar ridge following human tooth extraction. A total of 28 patients were divided into two groups: The experimental and control groups (n=14 each). Following tooth extraction, the experimental group was implanted with PRF membrane, whereas the control group was not. The gingival...

statins are used as cholesterol-lowering drugs by many patients and have been recently shown to affect bone metabolism. the aim of this study was to determine the effect of atorvastatinon on orthodontic tooth movement (otm) in rats.thirty-six adult male sprague-dawley rats were randomly divided into three groups of 12 samples each. group a, served as control with no medication while groups b an...

To evaluate the effect of a dentin adhesive on sclerotic dentin, contraction gap width and shear bond strength were measured. Dentin cavity wall was pretreated with an experimental dentin bonding system with and without a dentin primer, or with a commercial dentin bonding system. In the experimental dentin bonding groups, contraction gap width of sclerotic dentin was significantly smaller than ...

AIM The purpose of this investigation was to examine the extent to which arch dimension or tooth size contributes to dental crowding. METHODS AND MATERIALS Two groups of dental casts were selected. Each group consisted of 30 pairs of dental casts including equal male and female samples. The first group had Class I malocclusions without crowding or spacing. The second group exhibited Class I m...

Objectives: 1) To determine tooth size ratios in Saudi subjects with Class II, Division 1 malocclusion, 2) to compare tooth size ratios between Saudi males and females and 3) to compare tooth size ratios between Saudi subjects with Class II, Division 1, and Saudi subjects with Class I normal occlusion, and Bolton’s results. Methods: The current study consisted of study models of sixty subjects ...

Introduction: Since the emergence of normal occlusion concept, selecting an appropriate treatment plan with or without tooth extraction has been a controversial subject. Nowadays, both methods can be successfully used for treatment of patients. However, some clinicians still believe that non-extraction orthodontic treatments have fewer complications. The purpose of this study was to evaluate de...

Various materials are used in modern dental and maxillofacial surgery for bone tissue substitution and reconstruction. All osteoplastic materials can be divided into four groups by origin: autogenic, allogenic, xenogenic and synthetic. Synthetic resorbable materials were intended as an inexpensive substitute for natural bone. Synthetic graft materials include various types of ceramics: tricalci...