PROF. ZOHAIR HAIDAR
Department of Oral and Maxillofacial Surgery, Safad Dental Center,Riyadh, Saudi Arabia

Salivary glands are found In and around the oral cavity and throat. They are divided into major salivary glands: the parotid, submandibular and sublingual glands, minor glands located in the lips, inner cheek area (buccal mucosa), and extensively in other linings of the mouth and throat. Salivary glands produce the saliva used to moisten the mouth, initiate digestion, and help protect the teeth from decay. Salivary gland problems that cause clinical symptoms include: obstruction, infection, tumors (primary benign and malignant), Treatment of salivary diseases falls into two categories: medical and surgical. Selection of treatment depends on the nature of the problem. In this presentation, a comprehensive clinical and radiological review of salivary glands diseases will be presented. Special emphasis will be on the role of the general dental practitioner in the management of those conditions.
Saudi Dental Journal 2006;18(SI)-Abstr.046

047.Evidence-based therapy in intrabony defects: Emdogain versus guided tissue regeneration versus access flaps

PROF. ZEINA MAJZOUB
Faculty of Dental Medicine, Lebanese University,Beirut, Lebanon

A wide range of therapeutic alternatives are currently available in the treatment of periodontal intrabony defects (IBD) such as access flaps, guided tissue regeneration (GTR) and more recently enamel matrix derivative EMD (Emdogain). Combination therapies have also been widely reported. The purpose of this presentation is to review the mechanisms of action of EMD, the histological and clinical results illustrated with the authors own data. In addition, the therapeutic outcome obtained with EMD will be compared to that achieved with more traditional techniques through an evidence-based approach.
Saudi Dental Journal 2006;18(SI)-Abstr.047

048.The etiopathogenesis and treatment of peri-implantitis

DR. FARHAD ATASSI
Department of Preventive Dental Sciences,College of Dentistry, King Saud University, Riyadh, Saudi Arabia

Dental implant therapy has entered routine clinical practice. However, many authors reported failure due to biological factors (Schou 1992, Mombelli 1993 and Tonetti 2006,). The First European Workshop on Periodontology in 1993 in Switzerland discriminated between peri-implant mucositis (reversible inflammation of the soft tissues), and peri-implantitis (the inflammatory process affecting the tissues around osseointegrated implant in function). Animal experiments and clinical studies reported that the formation of subgingival biofilm was an important etiologic factor (Mombelli et al. 1994, Lee 1999). The destruction of peri-implant tissues is considered to be the result of an abnormal immune response while the pathogenesis of implant loss involves a complex network of cells and inflammatory mediators (Seymour et al. 1989, Quirynen et al. 2002). Different treatment modalities for the plaque-induced inflammatory lesions in the peri-implant tissues have been described including implant surface decontamination methods. This presentation will highlight the latest scientific evidence of peri-implantitis. Special attention will be given to the etiology, etiopathogenesis and different treatment modalities of the peri-implantitis.
Saudi Dental Journal 2006;18(SI)-Abstr.048

DR. KHALID S. AL-HAMDAN
College of Dentistry, King Saud University,Riyadh, Saudi Arabia

The efficacy of guided bone regeneration (GBR) procedures in the treatment of a variety of clinical challenges is well established. Lost hard tissues may be predictably regenerated in extraction socket areas, around immediately placed implants, apicectomy crypts, over implant fenestration, dehiscence and periimplantitis defects. In addition, to satisfy the ideal goals of implant dentistry, the hard and soft tissues need to present ideal volumes and quality. The alveolar process is affected so often after tooth loss; augmentation is usually indicated to achieve optimum results. In addition, the placement of maxillary anterior implants is even more critical for ideal esthetics, phonetics, and function. Therefore, all methods to improve the recipient bone dimensions to optimize success should be considered, especially in the premaxilla. The objectives of this presentation are to review the keys of success of GBR in different clinical situations, long term survival of implant in grafted sites with GBR, and to present in a step by step manner how to perform such procedures with documented cases.
Saudi Dental Journal 2006;18(SI)-Abstr.049

Dr. ZIAD EDDIN AL BAGHDADI
Riyadh College of Dentistry and Pharmacy,Riyadh, Saudi Arabia

This study was designed to evaluate the clinical performance of a single-bottle adhesive system with three restorative materials placed in children using the total-etch technique. One hundred thirty restorations were placed on conservative preparations in 36 children using the incremental placement technique in a clinical environment. The restorations were evaluated within a week of placement (baseline) and again after 6 months. The criteria evaluated included retention, color match, marginal discoloration, marginal integrity, surface roughness, postoperative sensitivity, recurrent caries, and wear. Indirect evaluations of anatomical form, marginal adaptation and wear also were conducted. Clinical evaluation demonstrated no significant differences between the three restorative materials (ANOVA, 0.05), Five restorations had to be replaced: two compomer, two packable composite, and one amalgam. There was no clinically detectable wear in any of the restorations.
Saudi Dental Journal 2006;18(SI)-Abstr.050