نتایج جستجو برای: Periapical infection of teeth
تعداد نتایج: 21221281 فیلتر نتایج به سال:
Actinomycosis is a chronic and less common infectious process that established by Actinomyces israilii. Involvement of faciocervical region is more common than thorasic and visceral types and typically involves the angle of mandible and with less occurrence rate the upper jaw may also be involved. Periapical lesions of maxilla that involved in this process by Actinomyces israilii are rare and c...
The purpose of the study was to histologically analyse transition from pulpitis to periapical periodontitis on dog's teeth. Pulps of mandibular premolars (37 roots) were exposed using a low-speed handpiece. Teeth were left open to the oral environment for 20, 35, 50 and 65 days. After the experimental period animals were sacrificed. Undemineralised teeth with surrounding bone, embedded in methy...
Specific immunity has been implicated in the pathogenesis of periapical lesions, although the extent to which these mechanisms are actually involved in either protection or destruction of the pulp-periapex complex is yet to be established. To investigate this question we compared periapical-lesion pathogenesis in RAG-2 severe combined immunodeficient (SCID) mice with immunocompetent control mic...
Background and purpose: Periapical inflammatory lesions are localized periapical bone reactions that result from pulp necrosis and inflammation or periodontal diseases. Inappropriate treatments are often considered as one of the main factors associated with apical periodontitis. This study was done to evaluate periapical radiolucencies in panoramic radiographs. Materials and methods: In this c...
The area of endodontics has expanded in recent years to include operations that formerly were not done. e.g hemisection, intentional or unintentional replantations and treatment of periodontally-endodontically involved teeth. However, treatment of pulpitis and infected root canals occupy the major part of endodontic practice. The radical treatment of pulpless teeth by extraction which was so pr...
introduction: bacterial infection of tooth pulp can progress into periapical diseases. root canal treatment has been established as the best treatment. in cases of failure, nonsurgical retreatment of teeth is preferred to surgical procedure and extraction. materials & methods: in this historical cohort study, 104 permanent teeth with apical lesion were treated during 2002-2008. all teeth showed...
the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...
INTRODUCTION Bacterial infection of tooth pulp can progress into periapical diseases. Root canal treatment has been established as the best treatment. In cases of failure, nonsurgical retreatment of teeth is preferred to surgical procedure and extraction. MATERIALS AND METHODS In this historical cohort study, 104 permanent teeth with apical lesion were treated during 2002-2008. All teeth show...
AIM To compare the use of film-based periapical radiographs and digital panoramic images displayed on monitor and glossy paper in the assessment of the periapical status of the teeth. METHODOLOGY A total of 86 subjects were examined. All participants underwent a full-mouth radiographic survey (14 periapical radiographs) and a digital panoramic radiography. The periapical status of all apprais...
AIM To compare the use of periapical radiographs and digital panoramic images displayed on monitor and glossy paper in the assessment of the periapical status of the teeth using the periapical index (PAI). METHODOLOGY A total of 86 subjects were examined. All participants underwent a full-mouth radiographic survey (14 periapical radiographs) and a panoramic radiography. The periapical status,...
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