TY - JOUR
T1 - Incidence and relationship of an additional root in the mandibular first permanent molar and primary molars
AU - Song, Je Seon
AU - Kim, Seong Oh
AU - Choi, Byung Jai
AU - Choi, Hyung Jun
AU - Son, Heung Kyu
AU - Lee, Jae Ho
PY - 2009/1
Y1 - 2009/1
N2 - Objectives: The mandibular first permanent and primary molars occasionally have an additional root located distolingually. This study aimed to determine the incidences of an additional root in these molars and their relationship. Study design: This study involved 4050 children for whom periapical radiographs of the mandibular molar area were available. The incidence of an additional root for each molar was calculated and the pattern of concurrent additional roots in different molars was also investigated. Results: Additional roots were present in 33.1%, 27.8%, and 9.7% of the first permanent, second primary, and first primary molars, respectively. When an additional root was present in a primary molar, the probability of the posterior adjacent molar also having an additional root was greater than 94.3%. Conclusion: The presence of an additional root in a primary molar can be used to predict the presence of an additional root in molars posterior to it.
AB - Objectives: The mandibular first permanent and primary molars occasionally have an additional root located distolingually. This study aimed to determine the incidences of an additional root in these molars and their relationship. Study design: This study involved 4050 children for whom periapical radiographs of the mandibular molar area were available. The incidence of an additional root for each molar was calculated and the pattern of concurrent additional roots in different molars was also investigated. Results: Additional roots were present in 33.1%, 27.8%, and 9.7% of the first permanent, second primary, and first primary molars, respectively. When an additional root was present in a primary molar, the probability of the posterior adjacent molar also having an additional root was greater than 94.3%. Conclusion: The presence of an additional root in a primary molar can be used to predict the presence of an additional root in molars posterior to it.
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U2 - 10.1016/j.tripleo.2008.09.004
DO - 10.1016/j.tripleo.2008.09.004
M3 - Article
C2 - 19101484
AN - SCOPUS:57649240002
SN - 2212-4403
VL - 107
SP - e56-e60
JO - Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
JF - Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
IS - 1
ER -