Healing at Molar Extraction Sites Using Freeze-Dried Bone Allograft and Collagen Wound Dressing: Case Series and Three-Arm Analyses.

Purpose: Ridge preservation limits dimensional changes after tooth extraction. However, it is still unclear if using a membrane may be advantageous over a collagen wound dressing. Therefore, the goal of this report was to evaluate the outcomes of ridge preservation using freeze-dried bone allograft with a collagen wound dressing.

Prevalence of gingival biotype and its relationship to dental malocclusion.

Objective: To study the prevalence of different gingival biotypes in a sample of patients and the association between gingival biotype and different dental malocclusions.

Methods: Two hundred adult patients (100 males and 100 females) who presented for treatment at the Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia were recruited from February 2011 to February 2012. Gingival thickness was assessed for the maxillary central incisors using the transparency of periodontal probe technique.