Evaluation of cone beam computed tomography combining with dental microscopy and ultrasonic instrument in the treatment of canal calcification

doi:10.3877/cma.j.issn.1674-1366.2011.06.007

Abstract

Abstract:

Objective

Canal calcification is an obstacle of root canal treatment.Cone beam computed tomography （CBCT） has the advantages of high resolution and three-dimensional images reconstruction.Therefore， our study combined the technique of CBCT with dental microscopy and ultrasonic instrument to deal with the canal calcification， and the clinical outcomes were also assessed.

Methods

36 cases with calcified canals were collected from December 2009 to June 2011.Teeth in all cases were scanned by CBCT.The three-dimensional and multilayer reconstruction images were obtained to determine the exact location of the calcified part and canal morphology.Then the canals were unobstructed by ultrasonic files under dental microscopy.The success rates were calculated.

Results

The location of the calcified part and canal morphology could be demonstrated clearly by the images of CBCT.Of 36 cases， 34 canals were successfully managed and completed the root canal therapy， with a success rate of 94.4%，while there were 2 cases dropped because of completely calcified root canal.The diagnoses after analyzing data from CBCT scanning were completely confirmed by microscopy with accuracy of 100% in all cases.

Conclusions

CBCT images can provide direct and accurate images of the exact location of calcified canal and canal morphology.Combining CBCT with dental microscopy and ultrasonic instrument could be an effective method in management of canal calcification.

Key words: Cone beam computed tomography, Canal calcification, Dental microscopy

Xue-li MAO, Jun-qi LING, Zheng-mei LIN, Wei LIU, Min-yi CUI, Xu-fang ZHANG. Evaluation of cone beam computed tomography combining with dental microscopy and ultrasonic instrument in the treatment of canal calcification[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2011, 5(06): 594-599.

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Figures/Tables 5

References 7

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钙化类型	根管数	成功数	成功率（%）
根管上1/3 钙化	10	10	100
根管中1/3 钙化	24	24	100
根管中下段钙化	2	0	0
合计	36	34	94

钙化类型	根管数	成功数	成功率（%）
根管上1/3 钙化	10	10	100
根管中1/3 钙化	24	24	100
根管中下段钙化	2	0	0
合计	36	34	94

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