It is said, “If you build it, they will come”. Well, we built it and they did come, but one must realize, building is the hardest part.

DEPARTMENT OF ENDODONTICS
ADVANCED ENDODONTICS PROGRAM
GRADUATES OF CLASSES 1972 - 1996

UNIVERISTY OF SOUTHERN CALIFORNIA, DEPARTMENT OF ENDOOONTICS

The purpose of this study was to investigate the microor­ ganisms of strictly selected closed periapical lesions associated with both refractory endodontic therapy and pulpal calcification. Definitive criteria were established that assured complete clinical isolation of the periapical lesion from the oral and periodontal environment. A total of 13 criteria-referenced lesions were selected from 70  patients  with  endodontic  surgical   indications.  A well controlled culturing method was used in all cases and samples were taken by one clinician at three separate sitesduring each surgery. Samples taken at the surgical window and within the body of the lesion served as controls , whilst a third sample was taken at the apex. In all 13 cases, samples taken from the apex vielded mic roorganisms comprising 63.6% obligate aerobesand36.4%  facultative  anaerobes. Prevalence of the  isolated species was  31.8% for Actinomyces sp., 22.7% Propio11ibacterlum sp., 18.2% Streptococcus sp., 13 .6%   Staphlyococcus  sp.,   4.6% . Porphyromonas gingivalis, 4.6% Peptostreptococcus micros and 4.6% Gram-negative enterics. The results of this investigation indicate that closed periapical lesions associated with calcified teeth or those resistant to root canal treatment harbour bacteria. The inability to eradicate all root canal microorganisms during root canal treatment, along with anatomical factors, may allow further bacte­ rial colonization of the root apex and surrounding periapical tissues, and consequently prevent healing.

Results of longitudinal radiographic and clinical studies of 65 anterior maxillary and mandibular simple root fractures and of a study of six of these fractures have revealed that the integrity of the periodontal membrane is the essential requisite in root repair; that cementum will be found at the two fractured ends of the segments if other factors necessary for root repair are present; that the pulp is not necessary for root repair; that the prognosis for midroot and apicai fractures is more favorable than for cervical fractures; and that the prognosis for vertical fractures is unfavorable. The practicat applications of this study support the conservative and preventive approach to treatment—most simple root fractures are reparable and the fractured teeth need not necessarily be extracted.

Methods: This cross-sectional study included 352 diabetic patients with periodontitis who were registered at Riyadh Armed Forces Hospital, King Faisal Specialist Hospital and Research Centre, King Abdul Aziz Medical City, Naval Base Hospital, and Sultan Bin Adulaziz Humanitarian City, Riyadh, Kingdom of Saudi Arabia from July 2004 to August 2008. Microbiological analysis comprised the detection of Bacteroides forsythus (BO, Awegatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), and Prevotella intermedia (Pi) by polymerase

Evaluation of dental extractions, suturing and INR on postoperative bleeding of patients maintained on oral anticoagulant therapy

Thromboembolic risk and bleeding in patients maintaining or

Aim: The objective of the study was to evaluate the effectiveness of scaling and root planing (SRP) and adjunctive chemotherapy (doxycycline hyclate, 20 mg) on gingival health, specific cytokines and glycemic control in diabetic subjects.

The immediate placement of implants in the fresh extraction sockets of infected teeth with periradicular andperiapical lesions iscontraindicatedbecause ofboth the infectionandthe loss of

A few years ago many dentists considered rootcanal therapy to be a controversial and questionable treatment with unpredictable results.

The advancement and acceptance of endodontics as a special discipline has been meteoric. Its rise was predicated on a foundation of principles laid down by the early investigators of the field.

Various terms have been used to describe cracked teeth, e.g., incomplete fracture, greenstick fracture, and cracked tooth syndrome. Here the term tooth structure crack will be used to describe a line that breaks or splits the continuity of tooth dentinal surface but does not perceptibly separate that surface. This line cannot be wedged, or separated apart.

One hundred and twenty-five (125) plastic blocks with simulated narrow and curved canals size ISO 15 with curvature of 50° - 70° were divided into 5 equal groups.

ِAs society has become more health-conscious over the past several decades, the demand for endodontic therapy has continued to increase. In the United States alone, it has been estimated that more than 14 million teeth receive such treatment annually. The majority of these teeth require extensive restoration before masticato- ry function and acceptable esthetics can be regained. Thus, the relationship between endodontic therapy and restorative therapy is inseparable.

Many treatment failures in endodontic s are caused by problems that occurred during canal preparation. This article reviews principles of endodontic instrument design and analyzes the design as it relates to an automated handpiece. After a review of the problems of automation, there will be an introduction of a new automated handpiece and a new modified file known as the Anticurvature File.

Increasingly, endodontists are reaching  a  consensus on the criteria for acceptable and unacceptable endo­ dontic treatment (Table I). The reasons for endodontic successes and failures have been reported in the litera­ ture (Figs. 1 and 2).-1 20 The evaluation of previous root canal therapy is discussed in this article and guidelines proposed for the retreatment of endodontic failures.

This review discusses the multifactorial nature of tooth strength and concludes that endodontic treatment alone does not weaken intact anterior teeth. Therefore, restoration of such teeth does require post placement or fulI-coverage resto ration s. Posterior teeth, however, require full-coverage protection. It appears that the full-crown restoration "covers up" some of the disadvantages or deficiencies of some post and core restorations. The Iiterature supports the use of the amalgam coronal-radicular core or the post-retained amalgam core, as well as the composite post and core. The literature does not support use of the glass ionomer post and cores. As to which post system to select, the literature indicates that the parallel-sided, serrated Para-Post or Para-Post plus is a safe post when seated passively in the canal and cemented with zinc phosphate cements or composite resin cement , or when retained with amalgam. Dentin-retained, stress-producing posts such as the threaded posts should be avoided.

Preparation of space for posting can be prepared manually or mechanically with rotary instruments, such as Peeso drills, Gates-Glidden burs, or other types of rotary instruments. Regard­ less of the type of instrument used, ac­ cidents and errors, such as perfora­ tions and stripping of root structures can occur. Specific information on the effect of rotary drill size on the thick­ ness of canal walls is not provided in the literature. Unfortunately, post cav­ ity preparation is sometimes consid­ ered as nothing more than a hole drilled into the canal to receive a post, with little attention given to the anatomy of the root.