Conseqüências no crescimento de maxila e mandíbula de defeito ósseo cirúrgico no ramo da mandíbula de ratos

Rodrigues, Lucimar; Miyazaki, Luciane Toshie; Luz, João Gualberto de Cerqueira

doi:10.1590/s0102-86502004000500011

Cited by 5 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cephalometric evaluations from radiographs of dissected specimens using a computer system lead to reliable measurements, reducing technical difficulties 16 . Distances found were similar to those noted in other experiments [17][18][19][20] . Only structures which do not underwent direct influence of the fracture were used as reference points 16,18,19 .…”

Section: Discussionsupporting

confidence: 90%

“…Distances found were similar to those noted in other experiments [17][18][19][20] . Only structures which do not underwent direct influence of the fracture were used as reference points 16,18,19 . In this study deviation of the median line of the mandible in relation to the maxillary median line was observed in the fracture and undernourished fracture groups.…”

Section: Discussionsupporting

confidence: 90%

See 1 more Smart Citation

Effects of the condylar process fracture on facial symmetry in rats submitted to protein undernutrition

Rodrigues¹,

Corrêa²,

Luz³

2011

Acta Cir. Bras.

Self Cite

View full text Add to dashboard Cite

PURPOSE: To investigate the facial symmetry of rats submitted to experimental mandibular condyle fracture and with protein undernutrition (8% of protein) by means of cephalometric measurements. METHODS: Forty-five adult Wistar rats were distributed in three groups: fracture group, submitted to condylar fracture with no changes in diet; undernourished fracture group, submitted to hypoproteic diet and condylar fracture; undernourished group, kept until the end of experiment, without condylar fracture. Displaced fractures of the right condyle were induced under general anesthesia. The specimens were submitted to axial radiographic incidence, and cephalometric mensurations were made using a computer system. The values obtained were subjected to statistical analyses among the groups and between the sides in each group. RESULTS: There was significative decrease of the values of serum proteins and albumin in the undernourished fracture group. There was deviation of the median line of the mandible relative to the median line of the maxilla, significative to undernutrition fracture group, as well as asymmetry of the maxilla and mandible, in special in the final period of experiment. CONCLUSION: The mandibular condyle fracture in rats with proteic undernutrition induced an asymmetry of the mandible, also leading to consequences in the maxilla.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 90%

Effects of the condylar process fracture on facial symmetry in rats submitted to protein undernutrition

Rodrigues¹,

Corrêa²,

Luz³

2011

Acta Cir. Bras.

Self Cite

View full text Add to dashboard Cite

show abstract

“…4 Also, osteotomies that simulated a mandibular fracture in the growing period had as consequences asymmetries of the maxilla and the mandible, 5 or lessening of the mandible. 6 It has been demonstrated that the masticatory muscle function is a determinant of the quality of bone of the growing mandible. 7 The elevator muscles infl uence the transversal and the vertical dimensions of the face.…”

Section: Introductionmentioning

confidence: 99%

Effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young rats

et al. 2009

Self Cite

View full text Add to dashboard Cite

This study analyzed the effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young rats. A total of 30 one-month-old Wistar rats were used. Unilateral complete removal of the masseter muscle was performed in the removal group, and detachment followed by repositioning of the masseter muscle was performed in the dissection group, while only surgical access was performed in the sham-operated group. The animals were sacrifi ced at three months of age. Axial radiographic projections of the skulls and lateral projections of the hemimandibles were taken. Cephalometric evaluations were made and the values obtained were submitted to statistical analyses. In the removal group, there were contour alterations of the angular process, and a signifi cant homolateral difference in the length of the maxilla and a signifi cant bilateral difference in the height of the mandibular body and the length of the mandible were observed. Comparison among groups revealed signifi cance only in the removal group. It was concluded that the experimental removal of the masseter muscle during the growing period in rats induced atrophic changes in the angular process, as well as asymmetry of the maxilla and shortening of the whole mandible.

show abstract

“…O processo de reparo ósseo pode ser estudado por diversos modelos experimentais (AGUIAR, 2008;BOMBONATO;BRENTEGANI, 1997;FLACH et al, 2008;GRANSTROM;NILSSON, 1987). Porém, este modelo tem sido empregado com bastante sucesso em nosso departamento, em pesquisas que avaliaram o processo de reparo ou de crescimento ósseo (AGUIAR, 2008;RABEQUE et al, 2002;RODRIGUES;MIYAZAKI;LUZ, 2004). O rato é um animal de pequeno porte, de fácil manuseio e custo acessível, podendo ser usado em quantidades numerosas, e as lesões ósseas confeccionadas por meio de brocas proporcionam formas homogêneas.…”

Section: Período De Observaçãounclassified

“…LAMANO CARVALHO, 2001). Por outro lado o modelo de defeito ósseo mandibular simulando fratura permite a avaliação do processo de reparo por meio da formação de calo ósseo, sem comprometer significativamente a mastigação do animal (AGUIAR, 2008;RABEQUE et al, 2002;RODRIGUES;MIYAZAKI;LUZ, 2004). Até o presente momento nenhum estudo prévio foi feito para avaliar os efeitos da amlodipina no processo de reparo de fatura mandibular ou de qualquer outra fratura óssea.…”

Section: Introductionunclassified

Efeitos do bloqueador de canais de cálcio amlodipina na reparação óssea em defeito cirúrgico no ramo mandibular de ratos

Moraes¹

View full text Add to dashboard Cite

(p=0,028) dias. Na análise histológica não se observaram atrasos no processo de reparo ósseo para ambos os grupos. Porém, na análise histomorfométrica, o grupo da amlodipina apresentou redução significante do volume de osso neoformado nos períodos de 7 e 14 dias (p=0,049), não havendo diferenças significativas no período de 30 dias. Houve redução significante nos níveis de fosfatase alcalina para o grupo da amlodipina nos períodos iniciais (p=0,049). Não houve alterações para os níveis de cálcio sérico. Concluiu-se que o uso crônico da amlodipina prejudicou a neoformação óssea no processo de reparo do defeito cirúrgico no ramo mandibular de ratos, porém não impediu a consolidação da fratura. Palavras-Chave: Bloqueadores dos Canais de Cálcio-Efeitos Adversos-Consolidação de Fraturas-Fraturas Mandibulares-Fraturas Ósseas Moraes RB. Effects of the calcium channel blocker amlodipine on bone healing of a surgical defect in the mandibular ramus of rats [Dissertação de Mestrado]. São Paulo: Faculdade de Odontologia da USP; 2009.

show abstract

Conseqüências no crescimento de maxila e mandíbula de defeito ósseo cirúrgico no ramo da mandíbula de ratos

Cited by 5 publications

References 13 publications

Effects of the condylar process fracture on facial symmetry in rats submitted to protein undernutrition

Effects of the condylar process fracture on facial symmetry in rats submitted to protein undernutrition

Effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young rats

Efeitos do bloqueador de canais de cálcio amlodipina na reparação óssea em defeito cirúrgico no ramo mandibular de ratos

Contact Info

Product

Resources

About