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Three-dimensional assessment of external apical root resorption after maxillary posterior teeth intrusion with miniscrews in anterior open bite patients
Al-Falahi, Bilal; Hafez, Ahmad Mohammad; Fouda, Maher.
  • Al-Falahi, Bilal; Mansoura University. Faculty of Dentistry. Department of Orthodontics. Mansoura. EG
  • Hafez, Ahmad Mohammad; Mansoura University. Faculty of Dentistry. Department of Orthodontics. Mansoura. EG
  • Fouda, Maher; Mansoura University. Faculty of Dentistry. Department of Orthodontics. Mansoura. EG
Dental press j. orthod. (Impr.) ; 23(6): 56-63, Nov.-Dec. 2018. tab, graf
Article in English | LILACS | ID: biblio-975032
ABSTRACT
ABSTRACT

Objective:

The objective of this study was to assess the external apical root resorption (EARR) of the maxillary posterior teeth after intrusion with miniscrews.

Methods:

Fifteen patients (13 females and 2 males) with age ranging from 14.5 to 22 years (mean 18.1 ±2.03 years) were selected to participate in this study. All patients presented with anterior open bite of 3 mm or more. An intrusion force of 300 g was applied on each side to intrude the maxillary posterior teeth. Cone beam computed tomography (CBCT) scans were taken pretreatment and post-intrusion and were analyzed to evaluate the EARR.

Results:

The maxillary posterior teeth were intruded in average 2.79 ± 0.46 mm (p< 0.001) in 5.1 ± 1.3 months, and all examined roots showed statistically significant EARR (p< 0.05) with an average of 0.55 mm, except the distobuccal root of the left first permanent molars and both the palatal and buccal roots of left first premolars, which showed no statistically significant changes.

Conclusions:

The evaluated teeth presented statistically significant EARR, but clinically, due to the small magnitude, it was not considered significant. Moreover, the CBCT provided a good visualization of all roots in all three planes, and it was effective in detecting minimal degrees of EARR.
RESUMO
RESUMO

Objetivo:

o objetivo desse estudo foi verificar a existência de reabsorção radicular apical externa (RRAE) em dentes posterossuperiores após intrusão ancorada em mini-implantes.

Métodos:

quinze pacientes (13 mulheres e 2 homens) com a idade variando entre 14,5 e 22 anos (média de 18,1 ± 2,03 anos) foram selecionados para participar desse estudo. Todos os pacientes possuíam mordida aberta anterior de 3mm ou mais. Uma força de 300 gramas foi aplicada em cada lado para intruir os dentes posterossuperiores. Tomografias computadorizadas de feixe cônico (TCFC), adquiridas antes do tratamento e após a intrusão, foram comparadas para se avaliar a RRAE.

Resultados:

os dentes posterossuperiores foram intruídos em média 2,70 ± 0,46 mm (p< 0,001) em 5,1 ± 1,3 meses, e todas as raízes examinadas mostraram RRAE estatisticamente significativa (p< 0,05), com média de 0,55 mm, exceto pela raiz distovestibular dos primeiros molares permanentes esquerdos, e pelas raízes palatina e vestibular dos primeiros pré-molares esquerdos, que não apresentaram mudanças estatisticamente significativas.

Conclusões:

os dentes avaliados apresentaram RRAE estatisticamente significativa, a qual, porém, não foi considerada clinicamente significativa, devido à sua reduzida magnitude. Além disso, a TCFC possibilitou uma boa visualização de todas as raízes nos três planos espaciais, e foi eficaz para detecção de níveis mínimos de RRAE.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Root Resorption / Bone Screws / Imaging, Three-Dimensional / Open Bite / Maxilla Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2018 Type: Article Affiliation country: Egypt Institution/Affiliation country: Mansoura University/EG

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Full text: Available Index: LILACS (Americas) Main subject: Root Resorption / Bone Screws / Imaging, Three-Dimensional / Open Bite / Maxilla Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2018 Type: Article Affiliation country: Egypt Institution/Affiliation country: Mansoura University/EG