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Study of Anatomical Relationship between Posterior Teeth and Maxillary Sinus Floor in a Subpopulation of the Brazilian Central Region Using Cone-Beam Computed Tomography - Part 2
Estrela, Carlos; Nunes, Carla A. B. C. M; Guedes, Orlando Aguirre; Alencar, Ana Helena G; Estrela, Cynthia R. A; Silva, Ricardo Gariba; Pécora, Jesus Djalma; Sousa-Neto, Manoel Damião.
  • Estrela, Carlos; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Nunes, Carla A. B. C. M; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Guedes, Orlando Aguirre; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Alencar, Ana Helena G; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Estrela, Cynthia R. A; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Silva, Ricardo Gariba; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Pécora, Jesus Djalma; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
  • Sousa-Neto, Manoel Damião; Universidade Federal de Goiás. Dental School. Department of Stomatologic Sciences. Goiânia. BR
Braz. dent. j ; 27(1): 9-15, Jan.-Feb. 2016. tab, graf
Article in English | LILACS | ID: lil-777137
ABSTRACT
Abstract This study evaluated the anatomical relationship between posterior teeth root apices and maxillary sinus floor (MSF) on 202 cone beam computed tomography (CBCT) exams. The distance between the root apices and the MSF, as well as the MSF thickness of the cortical bone closest to root apices and furcation regions were measured. The vertical and horizontal relationships of the MSF with the molar roots were classified into categories adapted from the criteria proposed by Kwak et al. (14). The shortest distances between MSF and the root apices were observed in the mesiobuccal root of the second molar (0.36±1.17 mm) and the palatal root of the first molar (0.45±1.10 mm) and the widest in buccal roots of the first premolars (5.47±4.43 mm). Significant differences were observed between the distance of MSF to the root apices of single-rooted first and second premolars. The cortical thickness ranged from 0.65±0.41 mm over the mesiobuccal root of the second molar to 1.28±0.42 mm over the buccal root of the first premolar. The most observed vertical and horizontal relationships were type II and 2H, respectively. The maxillary molar roots showed greater proximity to the MSF. The thickness of the MSF cortical bone closest to the apices and furcation regions was found to be similar only for premolars.
RESUMO
Resumo Avaliou-se a relação anatômica entre dentes posteriores e o soalho do seio maxilar (SSM) por meio da tomografia computadorizada de feixe cônico (TCFC) em 202 exames. A distância entre os ápices radiculares e o SSM, bem como a espessura do osso cortical do SSM próximo dos ápices radiculares e áreas de bifurcação foram medidas. As relações verticais e horizontais do SSM com as raízes dos molares foram classificados em categorias adaptadas a partir dos critérios propostos pelo Kwak et al. (14). A menor distância entre o SSM e os ápices dentários foi observada na raiz mesiovestibular do segundo molar (0,36±1,17 mm) e na raiz palatina do primeiro molar (0,45±1,10 mm), e a maior na raiz vestibular do primeiro pré-molar (5,47±4.43 mm). Diferenças significantes foram observadas entre a distância do SSM e os ápices dentários de primeiros e segundos pré-molares unirradiculares. A espessura da cortical óssea variou de 0,65±0,41 mm na região da raiz mesiovestibular do segundo molar a 1,28±0,42 na raiz vestibular do primeiro pré-molar. As relações vertical e horizontal mais prevalentes foram do tipo II e 2H, respectivamente. As raízes dos molares superiores apresentaram maior proximidade com o SSM. A espessura da cortical óssea do SSM nas regiões mais próximas dos ápices e área de furca foi similar apenas para os pré-molares.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Cone-Beam Computed Tomography / Maxillary Sinus / Molar Limits: Humans Country/Region as subject: South America / Brazil Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2016 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Goiás/BR

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Full text: Available Index: LILACS (Americas) Main subject: Cone-Beam Computed Tomography / Maxillary Sinus / Molar Limits: Humans Country/Region as subject: South America / Brazil Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2016 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Goiás/BR