TY - JOUR
T1 - Root morphology can be a risk factor for periodontal damage and root resorption in orthodontic movement
AU - Zaniboni, Ewerton
AU - Filho, Mário Vedovello
AU - Santamaria, Mauro Pedrine
AU - Jardini, Maria Aparecida Neves
AU - Martins-Ortiz, Maria Fernanda
AU - Consolaro, Alberto
AU - Junior, Milton Santamaria
N1 - Publisher Copyright:
© 2017, Piracicaba Dental School - UNICAMP.
PY - 2017
Y1 - 2017
N2 - Aim: The study evaluated, using histomorphometry, the percentage of hyaline area in periodontal ligament (PDL) and root resorption in orthodontic tooth movement (OTM). Methods: Ten rats were divided into two groups. G3 Group (n=5), with 3 days of OTM and G7 Group (n=5), with 7 days of OTM. A Control Group (n=5) consisted of contralateral teeth of each animal, which were not moved. Maxillary left first molar was moved, using stainless steel spring connected to the incisors with 40g force. Microscopic analysis was done in transversal sections of the mesiovestibular (MV) and distovestibular (DV) roots in the cervical level. Results: There was a PDL hyaline area in the DV root of 6.2% in G3 and 1.8% in G7. The root resorption area in G7 was 0.9%. On MV root and Control Group were not found occurrences of hyaline areas in PDL and no root resorption. Conclusions: Based on the results obtained, it might be concluded that smaller roots showed higher frequency of hyaline areas and root resorption.
AB - Aim: The study evaluated, using histomorphometry, the percentage of hyaline area in periodontal ligament (PDL) and root resorption in orthodontic tooth movement (OTM). Methods: Ten rats were divided into two groups. G3 Group (n=5), with 3 days of OTM and G7 Group (n=5), with 7 days of OTM. A Control Group (n=5) consisted of contralateral teeth of each animal, which were not moved. Maxillary left first molar was moved, using stainless steel spring connected to the incisors with 40g force. Microscopic analysis was done in transversal sections of the mesiovestibular (MV) and distovestibular (DV) roots in the cervical level. Results: There was a PDL hyaline area in the DV root of 6.2% in G3 and 1.8% in G7. The root resorption area in G7 was 0.9%. On MV root and Control Group were not found occurrences of hyaline areas in PDL and no root resorption. Conclusions: Based on the results obtained, it might be concluded that smaller roots showed higher frequency of hyaline areas and root resorption.
KW - Orthodontics
KW - Periodontal ligament
KW - Root resorption
KW - Tooth movement
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U2 - 10.20396/bjos.v16i0.8651188
DO - 10.20396/bjos.v16i0.8651188
M3 - Article
AN - SCOPUS:85045274935
SN - 1677-3225
VL - 16
JO - Brazilian Journal of Oral Sciences
JF - Brazilian Journal of Oral Sciences
M1 - e17079
ER -