Endodontics & dental traumatology最新文献_第3页

Neurotoxic effect of two root canal sealers with calcium hydroxide on rat phrenic nerve in vitro. 两种氢氧化钙根管封闭剂对大鼠膈神经的神经毒性作用。

Endodontics & dental traumatology Pub Date : 1991-12-01 DOI: 10.1111/j.1600-9657.1991.tb00210.x

J Boiesen, P Brodin

引用次数: 43

Conservative management of a combined endodontic-orthodontic lesion. 牙髓-正畸合并病变的保守治疗。

Endodontics & dental traumatology Pub Date : 1991-12-01 DOI: 10.1111/j.1600-9657.1991.tb00215.x

I Rotstein, G Engel

引用次数: 11

A case of progressive external root resorption. 进行性外牙根吸收1例。

Endodontics & dental traumatology Pub Date : 1991-12-01 DOI: 10.1111/j.1600-9657.1991.tb00216.x

O Zmener, J A Kuperman

引用次数: 2

Apical placement of needle tip with an injection-thermoplasticized gutta-percha technique for root canal obturation. 热塑性胶胶注射技术在根管充填中的根尖放置。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00390.x

T Lambrianidis, A Veis, P Zervas, I Molyvdas

{"title":"Apical placement of needle tip with an injection-thermoplasticized gutta-percha technique for root canal obturation.","authors":"T Lambrianidis, A Veis, P Zervas, I Molyvdas","doi":"10.1111/j.1600-9657.1990.tb00390.x","DOIUrl":"https://doi.org/10.1111/j.1600-9657.1990.tb00390.x","url":null,"abstract":"It is recommended that when injection-thermoplasticized gutta-percha is used as the obturation technique, the root canal space should be prepared in such a way that the 23-gauge injection needle tip can be placed at a distance 3 to 5 mm short of the working length. In this study the apical seal and extent of gutta-percha were evaluated when the 23-gauge tip was placed at a distance 4 mm, 6 mm, and 8 mm short of the working length. Ninety-nine human single-rooted mandibular incisors and premolars divided into 3 equal groups were used. Their crowns were separated at the cementoenamel junction and their roots were stored in sodium hypochlorite for 1 week. The roots were then instrumented from size 20 at the working length to size 70:4 mm short of the working length in group A, 6 mm in group B, and 8 mm in group C. Following instrumentation, 3 randomly selected roots of each group were used as control. The remaining 30 roots of each group were covered with aluminium foil and embedded in acrylic blocks. The root canals were then dried, coated with sealer (Roth 811) and obturated by injection of thermoplasticized gutta-percha using the single-phase technique. Vertical condensation followed. The roots were immersed in dye for 3 days and then demineralized, dehydrated and cleared in xylene. Measurements of linear dye penetration for the apical seal and for underextension were done by 2 independent examiners under a stereomicroscope. The results of this study showed no statistically significant difference in leakage between the groups.(ABSTRACT TRUNCATED AT 250 WORDS)","PeriodicalId":77113,"journal":{"name":"Endodontics & dental traumatology","volume":"6 2","pages":"56-9"},"PeriodicalIF":0.0,"publicationDate":"1990-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/j.1600-9657.1990.tb00390.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13286837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A systematic approach to preventing intracanal breakage of endodontic files. 预防根管锉管内断裂的系统方法。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00391.x

T Sotokawa

引用次数: 15

Periapical bacterial plaque in teeth refractory to endodontic treatment. 牙根管治疗难治性牙尖周细菌菌斑。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00394.x

L Tronstad, F Barnett, F Cervone

{"title":"Periapical bacterial plaque in teeth refractory to endodontic treatment.","authors":"L Tronstad, F Barnett, F Cervone","doi":"10.1111/j.1600-9657.1990.tb00394.x","DOIUrl":"https://doi.org/10.1111/j.1600-9657.1990.tb00394.x","url":null,"abstract":"It has recently been found that bacteria are able to survive and maintain an infectious disease process in periapical lesions of nonvital teeth. The purpose of this study was to examine the surfaces of root tips removed during surgical-endodontic treatment for the presence of microorganisms. A full thickness flap was reflected under strict surgical asepsis and the periapical lesions were enucleated and removed. About 2-3 mm of the root was cut off, rinsed in sterile saline and placed in 10% neutral-buffered formalin. Upon fixation, the root tips were dehydrated, air-dried and given an electrically conducting coat of gold in a vacuum evaporator. The root tips were then studied in a Jeol, JSM-U3 scanning electron microscope, usually operated at 20 kV. The root surfaces were covered with soft tissue, except at the apex of the roots, where a continuous, smooth and structureless coating was seen, apparently adjacent to the apical foramen. At higher magnification a variety of bacterial forms were recognized in the smooth coating. A bacterial plaque was observed in irregularities of the surfaces between fiber bundles and cells and in crypts and holes. The bacteria were held together by an extracellular material and the plaque was dominated by cocci and rods. Fibrillar forms were recognized as well, often with cocci attached to their surfaces.","PeriodicalId":77113,"journal":{"name":"Endodontics & dental traumatology","volume":"6 2","pages":"73-7"},"PeriodicalIF":0.0,"publicationDate":"1990-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/j.1600-9657.1990.tb00394.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13286840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 222

In vivo fractures of endodontically treated posterior teeth restored with amalgam. 牙髓治疗后牙体内骨折用汞合金修复。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00389.x

E K Hansen, E Asmussen, N C Christiansen

{"title":"In vivo fractures of endodontically treated posterior teeth restored with amalgam.","authors":"E K Hansen, E Asmussen, N C Christiansen","doi":"10.1111/j.1600-9657.1990.tb00389.x","DOIUrl":"https://doi.org/10.1111/j.1600-9657.1990.tb00389.x","url":null,"abstract":"The cumulative survival rate (retention of both cusps) and the fracture pattern of 1639 endodontically treated posterior teeth were assessed in a retrospective study. All teeth had an MO/DO or an MOD cavity restored with amalgam without cuspal overlays. The 20-year survival rate of teeth with an MO/DO cavity was markedly higher than that of teeth with an MOD cavity. The lowest survival rate was found for the upper premolars with an MOD cavity: 28% of these teeth fractured within 3 years after endodontic therapy, 57% were lost after 10 years, and 73% after 20 years. Generally, the cusp most prone to fracture was the lingual one, and lingual fractures caused significantly more damage to the periodontal tissues than did facial or total crown fractures. The severity of periodontal damage increased with posterior location of the tooth. By far the most serious failures, irrespective of the cavity type, were found for the upper second molar, as 10 of 29 fractures led to extraction. It is concluded that amalgam, especially in MOD cavities, is an unacceptable material for restoration of endodontically treated posterior teeth if used without cuspal overlays.","PeriodicalId":77113,"journal":{"name":"Endodontics & dental traumatology","volume":"6 2","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"1990-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/j.1600-9657.1990.tb00389.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13286836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 155

Traumatic dental injuries in 3- to 13-year-old boys in Monterrey, Mexico. 墨西哥蒙特雷3至13岁男孩的创伤性牙齿损伤。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00392.x

A V Sanchez, F Garcia-Godoy

引用次数: 57

Tissue response to an experimental calcium hydroxide-based endodontic sealer: a quantitative study in subcutaneous connective tissue of the rat. 组织对实验性氢氧化钙根管密封剂的反应:大鼠皮下结缔组织的定量研究。

Endodontics & dental traumatology Pub Date : 1990-04-01 DOI: 10.1111/j.1600-9657.1990.tb00393.x

O Zmener, M B Guglielmotti, R L Cabrini

{"title":"Tissue response to an experimental calcium hydroxide-based endodontic sealer: a quantitative study in subcutaneous connective tissue of the rat.","authors":"O Zmener, M B Guglielmotti, R L Cabrini","doi":"10.1111/j.1600-9657.1990.tb00393.x","DOIUrl":"https://doi.org/10.1111/j.1600-9657.1990.tb00393.x","url":null,"abstract":"Silicone tubes containing a freshly mixed experimental Sealapex, in which titanium dioxide was removed from the original formula, were implanted in the dorsal subcutaneous connective tissue of the rat. Solid silicone rods of the same size as the tubes were also implanted and used as inert controls. The tissue reaction to both these materials was histometrically and quantitatively studied under light microscopy and by elemental electron microprobe analysis. After 7, 30 and 90 d of implantation, different grades of tissue reaction to the tested materials were recorded. A granulomatous tissue containing numerous foreign-body giant cells and macrophages with engulfed particles in their cytoplasms was initially detected in contact with the test material. In addition, many fibroblasts and newly formed vessels were also observed at these areas. The results of this study revealed that these reactions increased progressively at the 30- and 90-d observations. The electron microprobe analysis of the granulomatous tissues showed the presence of heavy components of the experimental material.","PeriodicalId":77113,"journal":{"name":"Endodontics & dental traumatology","volume":"6 2","pages":"66-72"},"PeriodicalIF":0.0,"publicationDate":"1990-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/j.1600-9657.1990.tb00393.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13286839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 34

Surgical-restorative treatment of bleaching-related external root resorption. 手术-修复治疗与漂白相关的外根吸收。

Endodontics & dental traumatology Pub Date : 1989-02-01 DOI: 10.1111/j.1600-9657.1989.tb00338.x

S Friedman

引用次数: 29