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At least 487 records · Page 27Linked to original sources
PubMed2002

A new approach to restoring root-end cavity preparation in surgical endodontic procedures--a scanning electron microscopy study.

While many different restorative materials are now available for filling root-end preparations in surgical endodontic therapy, each one has drawbacks. The current study suggests that a flowable composite resin, cured by a high-power curing light in 10 seconds, may be the material of choice. The significance of coating the resected root surface with a dentin-bonding agent is also discussed.

Apicoectomy↗
PubMed2003

Healing of periapical lesions with complete loss of the buccal bone plate: a histologic study in the canine mandible.

This study evaluated periapical healing of induced apical lesions with concomitant loss of the buccal bone plate in a dog model using four foxhounds. In an initial surgery, pulp cavities of mandibular premolars were exposed to induce apical lesions. In the same session, the cortical bone covering the buccal root surfaces was surgically removed to simulate buccal bone loss. After radiographic confirmation of the development of apical lesions, sites were reentered for surgical treatment. Following apical and buccal debridement, root-end resection, and root-end filling, sites were subjected to three different treatment modalities: (1) flap readaptation (controls); (2) placement of a collagen membrane covering the apical defect and denuded root surface; or (3) placement of an anorganic bovine bone filler into the apical defect and onto the exposed buccal root surface, with additional application of a collagen membrane. Animals were sacrificed 7 months following the second surgery. Step sections were analyzed histometrically and morphometrically for periapical healing. Sites with membrane + filler showed a statistically significantly lower mean percentage of new bone formation within the former defect compared to both membrane-alone and control sites. No significant differences were found for tissue components deposited on the cut root face across treatment groups. Formation of a continuous thin layer of new cementum covering the exposed dentin surface and root-end filling material was a frequent finding. Analysis of the tissue regeneration on the buccal root aspect as well as the clinical periodontal parameters will be presented in a separate article.

Absorbable Implants↗
PubMed2003

[Root-end filling materials in apicoectomy--a review].

An integral component of apicoectomy procedure is the placement of a root end filling material. In this 20 years literature review we identified at least 19 different materials that have been used as root end filling materials. Unfortunately, the ideal material for this purpose is yet to be found. Amalgam is the most frequently used material in apicoectomy procedure and can lead to satisfying results in many cases. IRM, super EBA and MTA are more suitable materials, and give better results in apicoectomy procedures than Amalgam. IRM and super EBA are both ZOE cements. Super EBA is less cytotoxic than IRM, suggesting that the decreased eugenol in Super EBA allows it to be less irritating. MTA gives better results when tested for leakage and biocompatibility than IRM and Super EBA, and has the ability of induction of hard tissue. A possible disadvantage that prevents MTA from being acceptable as "the ideal root-end filling material" is a long setting time that may lead to dislodgment or deformation from root end preparation. Yet, in most cases MTA serves as the best choice for a root end filling material.

Apicoectomy↗
PubMed1992

Microscopes in endodontics.

The introduction of microscopes in clinical and surgical endodontics is fairly recent. Potential applications, including removal of fractured instruments, localizing calcified canals, soft tissue management and root-end procedures, are reviewed.

Apicoectomy↗
PubMedDate not supplied

Analysis of postoperative symptoms following surgical endodontic treatment.

OBJECTIVE: The purpose of this prospective study was to analyze postoperative pain and swelling of patients undergoing surgical endodontic treatment using a strict protocol incorporating measures to control postoperative symptoms. METHOD AND MATERIALS: The study consisted of 82 patients referred for surgical endodontic treatment. All surgical procedures were performed using a microsurgical technique employing strict protocol. All patients were premedicated with a single dose of oral dexamethasone (8 mg) preoperatively and two single doses (4 mg) 1 and 2 days postoperatively. Antibiotics were prescribed selectively only when severe symptoms were present due to infection. Patients were administered chlorhexidine mouthwash twice daily starting 3 days before the operation and an additional 7 days postoperatively starting the day after surgery. Cold compresses were applied on the skin at the site of surgery intermittently every 15 minutes during the operative day. Pain and swelling were recorded pre- and postoperatively, and the influence of different variables on postoperative sequelae were analyzed. RESULTS: One day postoperatively, 76.4% of the patients were completely pain free, less than 4% had moderate pain, and 64.7% did not report any swelling. The preoperative symptoms significantly influenced the pain experience post-surgery. CONCLUSION: There was a low incidence of postoperative pain and swelling following endodontic surgical treatment according to protocol with measures to control postoperative signs and symptoms. Patients with preoperative pain were more likely to have postoperative pain.

Administration, Oral↗
PubMed2003

Long-term observation of endodontic surgical intervention to treat root perforation and apical periodontitis: a case report of an amalgam-restored tooth.

A case of crestal root perforation and periapical lesion in a maxillary left lateral incisor is reported. Teeth with root perforation present technical difficulties in their clinical management because of their complex defects. In the present case, surgical endodontic treatment was chosen. The apical and lateral pathology was curetted, the tooth root was resected, and a retrograde root restoration of amalgam was placed in a root-end cavity and perforation site. A 10-year follow-up clinical and radiographic examination showed an asymptomatic tooth with osseous healing proceeding.

Adult↗
PubMed2004

Surgical intervention of mucosal fenestration in a maxillary premolar: a case report.

Labial mucosal fenestration of the root apex is an uncommon occurrence. An unusual case involving a maxillary right first premolar is described. When presented, the tooth was nonvital with the buccal root apex readily seen through a soft tissue and bone fenestration. Conventional endodontic treatment with gutta percha failed to resolve the problem. Periodontal surgery with a laterally positioned pedicle flap was thus scheduled. At the 1-month recall, complete healing was evident in the surgical site, and the fenestrated area of the maxillary right first premolar was filled with healthy mucosal tissue. One-year postoperatively, the mucosa remained covered, and there was radiographic evidence of bone infilling in the periapical region.

Adult↗
PubMed2004

[Uses of MTA, a review. Part 2: Clinical applications].

Mineral trioxide aggregate (MTA) has been used in dentistry for the last five to eight years. Because of its high biocompatibility, its good sealing ability, and the fact that cemental tissues grow on this material, it has a relatively wide range of applications in endodontics. MTA may be used to cap exposed vital pulps, to seal open apices or perforations, or as a retro-filling material in apical surgery. These applications are presented in the current article, and discussed based on case reports.

Aluminum Compounds↗
PubMed2004

[Indications for use of MTA, a review. Part 1: Chemical, physical and biological properties of MTA].

Mineral trioxide aggregate is a recently introduced dental material. It may be used to seal perforations, make retrograde fillings in root-end resections, seal open apices, or cap vital pulps. In this review of the literature, physical, chemical, and biologic properties of MTA are discussed. Studies have suggested that MTA provides a better seal than formerly used materials such as IRM, amalgam, and Super-EBA. Further, MTA has low cytotoxicity and excellent biocompatibility. In vivo studies demonstrated a beneficial effect of MTA on pulpal and periodontal regeneration. Although controlled randomized clinical trials are still missing, MTA appears to be a suitable material to tightly seal dental hard tissues from the periodontium, or to cap the exposed pulp.

Aluminum Compounds↗
PubMed2004

[Apical endodontic surgery].

If (a revision of) a conventional endodontic treatment is not possible or not successful, apical endodontic surgery can be indicated. The contemporary indications, the better retrograde preparation techniques with ultrasonic retro-tips, and the better visualisation of the operation area with an operation microscope can lead to higher success percentages. Moreover, the current developments in the field of compatible filling materials are promising. Also the application of lasers is promising, but has still to prove its clinical usefulness.

Apicoectomy↗
PubMed2004

Assessment of morphological changes and permeability of apical dentin surfaces induced by Nd:Yag laser irradiation through retrograde cavity surfaces.

The purpose of this in vitro study was to observe the morphological changes and apical dye penetration at apical dentin surfaces induced by Nd:YAG laser irradiation at different power settings with and without a laser initiator. Seventy five single rooted human maxillary anterior teeth were used. Following the establishment of the working lengths, the root canals were enlarged with step-back technique. The apex of each root was resected 3 mm perpendicular to its long axis. Standard Class I cavities of 2 mm depth and 2 mm width were prepared. The teeth were randomly divided into five groups with fifteen teeth in each. In Group 1, the retrograde cavity preparations were lased with Nd:YAG laser at 2 W and those in Group 2 preparations were lased with Nd:YAG laser at 3.2 W. In Group 3, the retrograde cavity surfaces were lased with Nd:YAG laser at 2 W following the application of India ink. Group 4 was lased with the same settings of Group 2 after an absorbent cotton point soaked with India ink was inserted into the cut dentinal surfaces and the inner walls of the apical preparations. Group 5 served as control. Five teeth from each group were examined using scanning electron microscopy (SEM). The amounts of smear layer, debris, and recrystalized dentin present were assessed and scored. Retrograde cavities of ten teeth from each group were filled with amalgam to examine apical dye penetration. The teeth were immersed in 2% basic fuscin and kept for 48 hours. Dye penetration was evaluated by stereomicroscope at a magnification of X10. The results showed the usage of India ink with Nd:YAG laser enhanced the amount of melting and recrystalization of dentin and the radiation and initiator increased the leakage.

Analysis of Variance↗