Factors affecting successful prognosis of root canal treatment

Matsumoto, Toru; Nagai, Takashi; Ida, K.; Ito, Masato; Kawai, Yasuo; Horiba, Naoki; Sato, Ryo; Nakamura, Hiroshi

doi:10.1016/s0099-2399(87)80098-5

Cited by 72 publications

(66 citation statements)

References 12 publications

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“…Using the more stringent eligibility list, seven of these studies met the criteria. This resulted in a total of 12 studies (17)(18)(19)(20)(21)(23)(24)(25)(26)(27)(28)(29). This meta-analysis considered three categories of obturation length from the radiographic apex: (a) 0 -1 mm (group A), (b) Ͼ1 mm but Ͻ3 mm (group B), (c) obturated past the radiographic apex, including sealer (group C).…”

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confidence: 99%

Determining the Optimal Obturation Length: A Meta-Analysis of Literature

Schaeffer

White

Walton

2005

Journal of Endodontics

144

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The purpose was to aid in determining termination of instrumentation and obturation. A meta-analysis was conducted as to success/failure of different obturation lengths. Inclusion criteria were (a) minimum follow-up of 2 yr, (b) data on obturation length, (c) definition of success/failure, (d) available data on success/failure, (e) radiographic evaluation. Correlations were made as to success/failure as related to length of obturation from the apex. When comparing group A (obturated 0 -1 mm from apex) versus group C (obturated past apex) using the DerSimonian and Laird estimates, group A showed a marginally better (p Ͻ 0.10) success rate than group C by 28.8%. Group A had better success than group B (obturated Ͼ1 mm short); the difference was insignificant. The results were similar after controlling for study quality using a single random effects regression model. In conclusion, the meta-analysis indicated that a better success rate is achieved when treatment includes obturation short of the apex. here has been disagreement where to terminate instrumentation and obturation (1). Kuttler (2) believed termination should be to the apical constriction, when the apical constriction exists. Seltzer et al. (3) found that the reaction to tissues were milder when instrumenting short of the apex as compared to instrumenting beyond the apex. In a subsequent study, Seltzer et al. (4) concluded that optimum tissue repair was found when canals were instrumented and filled short of the apex; material that was forced into the periapical tissues caused a chronic inflammatory response. Green (5, 6) Weine, (7) Frank (8), and Stein (9) advocated obturating short of the radiographic apex (0.5-2.0 mm). They based their arguments on Kuttler's microscopic analysis (2) or on their own studies. Walton and Torabinejad (10) and Weine (5) also agree with obturating short of the radiographic apex, with the additional consideration that, in the presence of root and/or bone resorption, preparation and obturation should be to even shorter lengths. Alternatively, Schilder (11, 12) advocated debridement and obturation to the radiographic apex, which often results in material being extruded into periradicular tissues.Given the varying opinions on where to terminate, a meta-analysis of the literature may clarify this issue. Meta-analysis is a statistical procedure that combines the results of independent studies that are determined to be "combinable" (13). Assessment of the validity and quality of the independent studies is essential (14). Through a meta-analysis, information is maximized when obtained from the available data; this would not be possible from any single study. The goals of a meta-analysis include: (a) increasing statistical power for comparing end-points and subgroups, (b) resolving uncertainty when reports disagree, (c) encouraging improvements in the quality of primary research, and (d) helping to plan for future research (15).The process of conducting a meta-analysis is similar to other research plans: first, formulate t...

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confidence: 99%

Determining the Optimal Obturation Length: A Meta-Analysis of Literature

Schaeffer

White

Walton

2005

Journal of Endodontics

144

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“…2 In terms of radiographic success, if there is a reduction in the size of a pre-opera tive periapical radiolucency then it may be deemed a success in the absence of clinical signs and symptoms. 11 It has been suggested that the absence of clini cal signs and symptoms irrespective of satisfactory radiographic features indi cate success, while others state there must also be evidence of complete boney repair. 8,12 There were no clinical signs or symptoms in the case presented after 1994 and clear evidence of a decreas ing radiolucency, therefore based on the work by Byström et al the treatment could be deemed successful.…”

Section: Discussionmentioning

confidence: 99%

Radiographic evidence of postoperative healing 12 years following root canal treatment – a case report

2007

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“…Matsumato et al [29] reported that the prognosis for the treatment of large periapical lesions was not as good as that of small lesions. Harrison and Juroski [51] state that if the lesion is small then all the pathologic tissue can easily be removed; however, if the lesion is large, then it is more likely that curettage will be incomplete, and thus unsuccessful.…”

Section: Age Granuloma N (%) Cyst N (%) Abscess N (%) Total N (%)mentioning

confidence: 99%

“…Matsumato et al [29] showed that the prognosis for the surgical treatment of large periapical lesions was not as good as that of small lesions. Some authors [30] consider the size of the periapical lesion as a preoperative prognostic factor.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Clinical and Histopathologic Findings of 40 Periapical Lesions

Enríquez¹

2015

Dentistry

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Purpose: To relate the clinical and histopathological findings of periapical inflammatory lesions treated by endodontic surgery with the results of histopathological investigation of the same lesions. Materials and methods:Forty biopsies obtained during periapical surgery were histologically analyzed following curettage of the tissue, establishing the diagnosis as either periapical granuloma, radicular cyst, or abscess. The radiographic size of the lesion (area in cm 2 ) before surgery and after 2 years of follow-up was measured. The evolution at 48 months after surgery was evaluated according to the criteria of von Arx and Kurt. A statistical study was made, the inter-variable relationships were studied using analysis of variance with subsequent Tukey testing and calculation of Pearson's correlation coefficient. The hypothesis tests were conducted at the 0.05 level of significance. Results:Results indicated that 26 (65%) were women and 14 (35%) men at a mean age of 43.54 years (range, 18 to 69 years) with 40 biopsy samples. 65.5% of lesions were granulomas, 20% cysts, and 17.5% abscess. The results showed that tooth lower second molar had a high percentage of periapical lesion corresponding to periapical granuloma associated with overfilled canals. Conclusions:The outcomes of the present study show a high number of periapical granulomas among periapical cysts and confirms that periapical granulomas are the most common periapical lesions of endodontic origin associated with persistent apical periodontitis.

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Factors affecting successful prognosis of root canal treatment

Cited by 72 publications

References 12 publications

Determining the Optimal Obturation Length: A Meta-Analysis of Literature

Determining the Optimal Obturation Length: A Meta-Analysis of Literature

Radiographic evidence of postoperative healing 12 years following root canal treatment – a case report

Relationship between Clinical and Histopathologic Findings of 40 Periapical Lesions

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