Tomographic assessment of nasal septal changes following surgical-orthodontic rapid maxillary expansion

Schwarz, Gary M.; Thrash, Wm. James; Byrd, D.Lamar; Jacobs, Joe D.

doi:10.1016/0002-9416(85)90172-1

Cited by 41 publications

(36 citation statements)

References 7 publications

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“…Although several articles have been published on the effects of RME and SARME on nasal structures 10,13,21,22,26 , no published study has compared the effects of the two different techniques on the nasal complex. RME has been shown to increase nasal dimensions significantly, thereby eliminating any nasal airway resistance 13,15,21,24 .…”

Section: Discussionmentioning

confidence: 98%

“…The authors mention clinicians' concerns that nasal septal deviations could occur as a result of maxillary expansion. It was suggested that the surgical approach caused a bodily rather than a rotational expansion 4,22 , and that this bodily movement following SARME could cause a repositioning of the septum. The present study showed that both RME and SARME without disjunction of the pterygoid plates resulted in rotational expansion of the maxilla.…”

Section: Discussionmentioning

confidence: 99%

“…Schwarz et al 22 based their tomographic study on the undocumented belief that the nasal septum remains attached to one side of the maxilla during expansion. The authors mention clinicians' concerns that nasal septal deviations could occur as a result of maxillary expansion.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in nasal structures following orthopaedic and surgically assisted rapid maxillary expansion

Altuğ

Ataç

Kurt

et al. 2010

International Journal of Oral and Maxillofacial Surgery

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in nasal structures following orthopaedic and surgically assisted rapid maxillary expansion

Altuğ

Ataç

Kurt

et al. 2010

International Journal of Oral and Maxillofacial Surgery

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“…A theory has been proposed to explain the mechanism of recurrence after maxillary constriction treatment with RME and SARME. It was postulated that the mechanical strength of orthodontic appliances used for maxillary expansion is insufficient to overcome the forces generated by the facial muscles and soft tissue, whose aim is to restore the baseline anatomical relationships [28,35,36]. Nevertheless, the transpalatal distraction (TPD) used for treatment of maxillary constriction does not seem to support the above theory.…”

Section: Discussionmentioning

confidence: 88%

Treatment Options and Limitations in Transverse Maxillary Deficiency

Nowak¹,

Strzałkowska²,

Zawiślak³

2015

Dent. Med. Probl.

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“…Levando em conta a disjunção pterigomaxilar, o que clinicamente pode resultar em diminuição dos riscos e efeitos indesejados envolvidos no procedimento, especialmente relacionados aos dentes. Variações na técnica cirúrgica, como a disjunção processos pterigomaxilar, visam a diminuição das tensões nas estruturas faciais envolvidas, buscando evitar ou diminuir a incidência de possíveis complicações associadas ao tratamento (BELL & EPKER, 1976;SCHWARZ et al 1985;BAYS & GRECO, 1992;BASDRA, ZOLLER & KOMPOSH, 1995;BABACAN, et al 2006;GERLACH & ZAHL, 2005;).…”

Section: Tmxp Tensão Máxima Principalunclassified

Análise da distribuição das tensões em maxila submetida à expansão cirurgicamente assistida com aparelho ósseo-suportado

Neto¹

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região anterior e as tensões resultantes de forças transmitidas ao osso alveolar dos dentes adjacentes ao aparelho, parecem não ser suficientes para deslocar os dentes. Palavras-chave: Técnica de Expansão Palatina, Análise de Elemento Finito, Análise do Estresse Dentário ABSTRACTAnalysis of the distribution of maxillary stresses submitted to surgically assisted maxillary expansion with a bone-supported device Surgically assisted maxillary expansion (SARME) is the modality of treatment that aims to weaken the points of maxillary reinforcement allowing its gradual expansion. Such movement can be performed at the expense of dento-supported, dento-muco-supported, implanto-supported or bony-backed devices. The effects produced by the treatment range from skeletal changes (increase of nasal base, cavity and nasal air space) to dental inclinations (mainly in the supporting teeth of the expander apparatus), among others. The objective of the present research was to evaluate the distribution of stress produced by SARME in the maxillary structures using the bone-supported expander apparatus by the Finite Element Method (FEM). Material and methods:A three-dimensional hemi-maxilla model was simulated for SARME with a non-step descending LeFort I osteotomy with pterygomaxillary disjunction using a bone-supported device model for the 1mm aperture simulation test. The results showed a greater opening of the maxilla in the anterior region of the incisors to the premolar (1 mm) and smaller (0.6 mm) in the molar region. The principal maximal stress (TMXP) showed the concentration of the tension forces mainly in all the palatine face of the pre-molar maxilla to the maxillary tuft. Due to the lateral aspect, the TMXP was more evident in the posterior alveolar bone region, the molars and tuber, as well as in the epilating zygomatic region above the osteotomy.From the transversal plane, it was possible to observe the transmission of stress along the bony structures showing little dissipation for the roots of the molar.Meanwhile, the forces of compression (Principal Minimum Tension) evidenced by the principal minimal stress, were manifested in the areas of the zygomatic pillar adjacent to the osteotomies, as well as in the areas of contact of the support of the apparatus with the palatine bone. Tension and compression forces were also evidenced in the pterygoid process region. Von Mises' stress analysis showed that the most stressed part is the rod connecting the device module to the support platform. Conclusion:There was a greater opening of the maxilla in the anterior region and the resulting forces of tension transmitted to the alveolar bone of the teeth adjacent to the appliance did not seem to be sufficient to displace the teeth.

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Tomographic assessment of nasal septal changes following surgical-orthodontic rapid maxillary expansion

Cited by 41 publications

References 7 publications

Changes in nasal structures following orthopaedic and surgically assisted rapid maxillary expansion

Changes in nasal structures following orthopaedic and surgically assisted rapid maxillary expansion

Treatment Options and Limitations in Transverse Maxillary Deficiency

Análise da distribuição das tensões em maxila submetida à expansão cirurgicamente assistida com aparelho ósseo-suportado

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