The Evaluation of Physiologic Result From Submaxdibular-Notch Osteotomy, Condylotomy Operation for Prognathism

Smith, Arthur E.; Robinson, Marsh

doi:10.1097/00006534-195503000-00004

Cited by 7 publications

(4 citation statements)

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“…Castro's [2][3][4] operation (simplified version of Smith's [7]), permits the correction of slight retromandibulism by ventral sliding of the mandible, after osteotomy. The mandible is fixed in this position.…”

Section: Discussionmentioning

confidence: 99%

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Mandibular prognathism

Farina¹,

Cury²,

Ackel³

1981

Aesth. Plast. Surg.

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Mandibular prognathism develops as a result of several factors including infant osteogenetic disturbance, mechanical factors such as malocclusion, and heredity. The condition is characterized by an enlarged mandible, an increased mandibular angle and arch of the circle of the sigmoid notch, and masticatory and phonetic .disturbances. Curative treatment involves surgery using Castro's technique, which makes use of an extra-oral approach that leaves an inconspicuous scar.Mandibular prognathism is referred to by many names, including promentonism, promandibulism, mandibular protrusion or protraction, or progenia. Clinically, the condition is an anterior or ventral projection of the mandible in the midsagittal plane. It is pathological and has a genetic component, developing during the morphogenetic period. Anthropologically, however, prognathism is the protrusion of the subnasal (maxillomandibular) facial complex, and is ethnic, not pathological.Several factors are involved in the etiology of the condition. One is an osteogenetic disturbance in infancy. According to Sarnat and Robinson [6], this is the result of increased activity in the growth center of the mandibular condyle. Second, according to Carrea [1], mechanical factors favor the development of the deformity, including malocclusion and defective implantation of the teeth. These factors are probably controllable in infancy. Finally, there is clinical and historical evidence for a hereditary factor. Lepoivre [5] points to the Habsburg family as a well-known example of familial progna-Address reprint requests to Dr. Roberto Farina,

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Section: Discussionmentioning

confidence: 99%

“…Diagram of Smith's technique[7]: the metalic probe (a), shown on the left, gives us the size of the bone segment to be resected according to the preoperative studies done on the plaster model. In the center, the resected bone segment (a) and the osteotomy line (b) are shown.…”

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confidence: 99%

Mandibular prognathism

Farina¹,

Cury²,

Ackel³

1981

Aesth. Plast. Surg.

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“…The mandible is fixed with interdental wires for eight weeks with a pre-auricular incision approach. Gino Emilio Lasco, a pioneering oral and maxillofacial surgeon in Sao Paulo, Brazil, who developed various techniques and modifications of surgical techniques, such as surgery to correct benign hypertrophy of the masseter muscle, and surgery for free repositioning of the meniscus in temporomandibular disorders, and Oswaldo de Castro's modified orthognathic surgery with the possibility of a submandibular extra-buccal approach [19][20][21][22][23][24][25] are also described here with the latest modifications and improvements, with a 20-year follow-up describing what Lasco's surgical team, coordinated by the first author, has been doing since 1999.…”

Section: Introductionmentioning

confidence: 99%

“…Osteology 2024, 4 15 Oswaldo de Castro's modified orthognathic surgery with the possibility of a submandibular extra-buccal approach [19][20][21][22][23][24][25] are also described here with the latest modifications and improvements, with a 20-year follow-up describing what Lasco's surgical team, coordinated by the first author, has been doing since 1999. Most of the techniques described here, with the exception of the modifi proposed by Castro and Lasco [19], have tried to maintain the option of intra-oral su making modifications to the sagittal split of the mandible, innovating with the expec of reducing vasculo-nervous lesions, bleeding, recurrences, enhancing comfor efficiency for the surgeon, and improving patient acceptance of the proposed treat Today, it is very clear that there is no single effective technique for all cases of discrepancies [15,16].…”

Section: Introductionmentioning

confidence: 99%

Sixty Years of Innovation in Biomechanical Orthognathic Surgery: The State of the Art and Future Directions

Andreucci

2024

Osteology

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Craniofacial surgery is proposed and performed for a variety of reasons, ranging from congenital or acquired malformations to emotional disorders and parafunctions of the masticatory, respiratory, auditory, and visual systems. Surgery of the mandible and its orthostatic repositioning is the most common of these corrections of craniofacial anomalies. Throughout the history of these procedures, various techniques have been proposed and perfected, but always with a high rate of minor and major complications. The recurrence rate of mandibular malposition is high, as is the temporary loss of facial sensitivity and motor skills. These outcomes are often related to the choice of surgical technique rather than the skill of the surgeon, which is considered to be one of the most important factors in the final outcome. Surgical techniques involving direct manipulation of the vascular-nervous bundles, such as bilateral sagittal split osteotomy, clearly present the possibility of major or minor complications. In this study, an orthognathic surgical technique, performed by the same team for over 40 years and now available through a 20-year postoperative patient follow-up study, is presented with a literature review relating it to biomechanical concepts and bone remodeling to analyze the evolution of orthognathic surgery since it became common practice to correct maxillofacial discrepancies. In this review, we also present a case report in which previous orthodontic treatment prepared a patient for surgical correction of mandibular bone discrepancy without the need for combined maxillary and/or genioplasty, and we describe the most commonly used techniques today, as well as their advantages and disadvantages. The combination of established concepts together promotes favorable stability of mandibular osteotomies, functional anatomical positioning of the temporomandibular joint, reduced risk of injury to the mandibular vasculo-nervous bundle, and good aesthetics with positive patient acceptance and no relapse, thus these are the objectives for proposing innovative treatments that combine the technologies available today.

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PLASTIC SURGERY: Summaries of the Bibliographic Material Available in the Field of Otolaryngology for 1952 and 1953

Peer¹,

Walker²

1955

Archives of Otolaryngology - Head and Neck Surgery

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The Evaluation of Physiologic Result From Submaxdibular-Notch Osteotomy, Condylotomy Operation for Prognathism

Cited by 7 publications

References 0 publications

Mandibular prognathism

Mandibular prognathism

Sixty Years of Innovation in Biomechanical Orthognathic Surgery: The State of the Art and Future Directions

PLASTIC SURGERY: Summaries of the Bibliographic Material Available in the Field of Otolaryngology for 1952 and 1953

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