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At least 1,225 records · Page 68Linked to original sources
PubMed1994

Resorption patterns following intentional vital root transection in Macaca mulatta.

Previous studies have shown degeneration of nerve tissue as well as reorganization by periodontal tissue in dental pulp chambers following intentional vital root transection in Macaca mulatta. The supporting structures of the teeth, as well as the root itself, have not been fully studied following such surgery. The purpose of this study was to observe histopathologic changes in bone and root structure over a 1-year postoperative period. Three adult Macaca mulatta were evaluated for this study. Roots were transected within the apical one third and the areas were surgically closed. Following a postoperative soft diet for 7 days, the monkeys were allowed normal masticatory function. Maxillary and mandibular quadrants were removed following vascular perfusion of the animals at 1, 2, 3, 6, 24, and 52 weeks; quadrants were then demineralized, embedded, sectioned, and stained with Preece's trichrome. Resorption of cementum, dentin, and bone was independently evaluated on microslides for each tooth at consecutive intervals of approximately 70 microns. Resorption was rated as mild, moderate, or severe depending on the number of Howship's lacunae and the dimension of the resorptive area. Severe bone resorption was evident at 1 week, decreasing at 2 weeks, and then progressively decreasing up to 52 weeks. Most active inflammatory root resorption was noted on maxillary and mandibular premolars and molars on first-week specimens. Arrested resorptive areas were present in similar locations in second- and third-week specimens. New cementum was present along the cut surface on specimens from 2 to 52 weeks and within the pulp canal beginning at 2 weeks.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMedDate not supplied

[The efficacy of conservative and surgical methods of treating periodontitis in patients with chronic obstructive bronchitis].

The effectiveness of drug and surgical treatments for chronic destructive types of periodontitis was examined in 64 patients with chronic obstructive bronchitis by using clinical, X-ray, and immunological data. The findings suggest that surgical management is more preferable for treating prolonged destructive periodontitis in patients with chronic bronchitis.

Adult↗
PubMedDate not supplied

[A technic for performing tooth-preserving operations in treating radicular cysts and chronic periodontitis of the permanent teeth in children and adolescents].

A high incidence of complications developing during and after removal of teeth with chronic periodontitis and radicular cysts has made the dentists resort to conservative surgical methods of treatment of such conditions. These methods are replantation, resection of radical apex, hemisection, radicular amputation, granulectomy, crown-radicular separation, crown-radicular amputation, hemireplantation, and inter-radicular granulectomy. The technique of such treatment is described in detail. Conservative surgical methods of treatment include the following stages: (1) conservative therapy; (2) surgical treatment; (3) orthodontic treatment; (4) dynamic follow-up till complete recovery of osseous tissue. The recommended modalities are not difficult but rather effective and may be performed at pedodontic clinics.

Adolescent↗
PubMed1993

Parameters of achieving quality anesthesia and hemostasis in surgical endodontics.

Successful management of root structures and soft tissue pathology during endodontic surgical procedures is predicated on achieving both profound anesthesia and effective tissue hemostasis. The degree of anesthesia and hemostasis required depends on the type of endodontic surgical procedure; the more complex and definitive procedures require the greatest extent of vascular control. Predictable methods for achieving successful tissue management are based on the proper use of a vasopressor drug, proper technique and rate of injection, and the use of multiple injection sites. These approaches are designed not only to enhance patient comfort but also to improve visual and manipulative access to the surgical site.

Anesthesia, Dental↗
PubMed1994

[The CO2 laser and endodontic surgery: an epicritical evaluation].

The authors analyse the use of laser CO2 in endodontic surgery. They describe the laser biological effects on teeth, comprehending immediate structural changes (coagulation, carbonization, volatilization, fusion of dental tissue), and side effects (sterilization, modification of biomechanical properties and biostimulation). A surgical technique joining traditional aspects and laser radiation, restoring the apical shape to the anatomical origin is described. The employment of the laser in a defocalized way allows the sterilization of the apical region even in zones normally not reachable by the usual instruments. These devices are connected with laser irradiation and could improve the clinical results either improving bone restoration on raising dental tissue resistance to acidity. The authors emphasize that, whereas the clinical follow-up is in fact similar to the results obtained in a previous traditionally treated control group an accurate surgical technique will be the real important aspect to reach the recovery and the laser irradiation can help in it.

Apicoectomy↗
PubMed1994

Root resection: a viable treatment modality for the general dentist.

Root resection is a successful modality that is available to the general practitioner if some basic considerations are followed throughout the procedure. A step-by-step outline of each of these necessary considerations is presented, enabling a more predictable result for the patient when followed by the practitioner. By carefully following basic principles that begin with diagnosis and end with the final restoration, some of the problems that have made this procedure an unpredictable treatment for the general practitioner can be minimized.

Apicoectomy↗
PubMed1993

Root resection and root amputation.

Attachment loss in furcal areas is a challenge for the clinician. Root resection and root amputation techniques have been used to overcome the instrumentation problems that these areas pose. Recent reports indicate that this approach is effective and reliable but extremely technique-sensitive and expensive for endodontic and prosthetic involvement. A more conservative approach, such as scaling and root planing, is suggested only for shallow class II furcation. Guided tissue regeneration in deep class II and class III furcation seems to be unpredictable and the efficacy of this therapy in such areas is still questionable.

Apicoectomy↗
PubMed1995

Correction of a large periradicular lesion and mucosal defect using combined endodontic and periodontal therapy: a case report.

The successful treatment of a large endodontically induced periradicular defect and soft tissue fenestration by combined endodontic and periodontal therapy is described. Endodontics was performed on the mandibular left central incisor, the apex was resected, and a retrograde amalgam was placed. The defect was thoroughly debrided and the exposed root surface was planed with curettes. Demineralized freeze-dried bone allograft and a nonresorbable membrane were placed over the defect and the exposed root surface. The membrane was removed in 6 months and there appeared to be bone regeneration with complete closure of the soft tissue fenestration. Endodontic therapy in combination with guided tissue regeneration and bone grafting may provide another modality of treatment for endodontically related hard and soft tissue defects.

Alveolar Bone Loss↗
PubMed1995

Advances in endodontic surgery: Part 2.

As practitioners have increased their knowledge and skills in the art of saving teeth, periradicular surgery has increased in importance. This article, the second in a short series, considers how the practitioner should incorporate the many advances in endodontic surgical techniques and materials into their practice in order to ensure more predictable results.

Apicoectomy↗
PubMed1995

Advances in endodontic surgery: Part 1.

It is generally accepted that non-surgical endodontic therapy eliminates periapical inflammation or infection and allows teeth to be restored that previously might have been extracted. However, failure does occur in a small percentage of cases. When confronted with such cases the clinician should be prepared to initiate alternative procedures, including surgery, to enhance the rate of success. This, the first of two articles, describes refinements in endodontic surgical techniques and introduces the research that has been used to develop new materials and devices.

Anesthesia, Dental↗
PubMed1996

[The use of Hydroxyapol in filling in bone defects of the jaws and stimulating osteogenesis].

Hydroxyapol, a Russian biocomposite material, was used to repair defects of the jaw bones after resection of dental apices, cystectomy, and cystotomy in 102 patients. A more rapid formation of bone tissue and better stability of teeth were observed, in comparison with the patients treated traditionally, in whom the formation of a blood clot was the basis of osteointegration. Hydroxyapol is an effective means of osteogenesis, characterized by an anti-inflammatory effect.

Adult↗
PubMed1997

Treatment outcome of surgical and non-surgical management of endodontic failures.

The principal modalities available to manage endodontic treatment failures are orthograde retreatment and apical surgery. Both modalities have specific advantages, clinical implications, and risks, and their selection involves a complex decision-making process. A review of the literature pertaining to the treatment outcome of each modality was undertaken to establish an objective reference for practitioners involved in the management of endodontic treatment failures. Based on a weighted average calculation of the results reported in the reviewed studies, the orthograde retreatment of teeth associated with apical periodontitis results in a success rate of 66 per cent, an uncertain healing rate of 11 per cent, and a failure rate of 23 per cent. Apical surgery results in a success rate of 59 per cent, an uncertain healing rate of 22 per cent, and a failure rate of 19 per cent. These figures are discussed with reference to the characteristics of the reviewed studies. It appears that many of the reviewed studies have lesser relevance today, due to the current technical improvements in both treatment and modalities.

Apicoectomy↗