Skeletal and dental relapses after skeletal class III deformity correction surgery: single-jaw versus double-jaw procedures

Al-Delayme, Ra'ed Mohammed Ayoub; Al-Khen, Moutaz; Jerjes, Waseem

doi:10.1016/j.oooo.2012.08.443

Cited by 21 publications

(38 citation statements)

References 16 publications

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“…Due to significant distal displacement of mandibular proximal segment (more than 5 mm) BSSRO changed significantly the jaw relationships in the sagittal plane and skeletal facial convexity. However, its impact on the vertical relationships was almost insignificant, what is in agreement with the results of similar studies 11,21,22,[25][26][27] .…”

Section: Discussionsupporting

confidence: 91%

“…Judging by differences between the values of these variables after each operative procedure, the angle SNA was increased by an average of 4.5 ± 3.2º by LeFort I osteotomy, which is a specifity of this operative procedure and the SNB angle was reduced by an average of slightly more than 2º. This is in agreement with the results of Johnston et al 26 , Al Gunaid et al 16 , Al Delayme et al 27 , Sinobad 18 , Aydil et al 28 , Van Sickls and Walender 29 .…”

Section: Discussionsupporting

confidence: 90%

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Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

Sinobad

Strajnić²,

Sinobad³

2020

VOJNOSANIT PREGL

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Bacground/Aim. Recently, maxillary and bimaxillary surgery gained the primacy in the surgical correction of class III deformities. The aim of this investigation was to compare the changes in the skeletal relationships in patients with mandibular prognathism after bimaxillary surgery. Methods. The study included 70 subjects divided into three groups. Twenty class III patients of the experimental group 1 underwent bilateral sagittal ramus osteotomy and twenty patients of the experimental group 2 were subjected to bimaxillary surgery. The control group consisted of 30 subjects with skeletal class I and physiological occlusion. Cephalometric research was conducted on 110 lateral cephalometric radiographs made in subjects of the experimental groups 1 and 2 before and after surgery and in subjects of the control group. Using the computer program "Dr. Ceph", 30 linear and angular skeletal variables were analyzed on each radiograph. Results. Bimaxillary osteotomies changed most of variables that characterize the mandibular prognathism. The changes in the sagittal plane included the significant increase of sella-nasion to the A point (SNA) angle (by 4º on the average) and the A point to B point (ANB) angle (6°), and significant reduction in angles sellanasion to the B point (SNB) (3º), gonial angle (ArGoMe) (8°), gonial angle inferior (NGoMe) (6.2º), and Björks sum (7°). The vertical relationships were normalized by significant reduction in overall anterior face height N-Me (by 5 mm on the average), the lower anterior face height ANS-Me (4 mm), significant increase in the total posterior face height S-Go (2.5-3 mm), lower posterior face height PNS-Go (4 mm), and significant reduction of the basal and mandibular plane angles. Conclusion. Compared to the isolated mandibular operations, bimaxillary surgery changes more efficiently the sagittal and vertical skeletal relations in patients with class III deformities and harmonizes more successfully the entire skeletal facial profile.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 90%

Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

Sinobad

Strajnić²,

Sinobad³

2020

VOJNOSANIT PREGL

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“…Consistently, many studies [1,2,9,10,19] are published concerning the stability of BSSO for the mandibular setback in bi-maxillary surgery in different techniques and modalities, but it is rather surprising that there are no reports concerning stability of IVRO in double-jaw surgery. The only three conducted studies in the literature discussed the IVRO stability in single-jaw surgery as isolated procedures [16,21,25] or as a comparison with BSSO in double-jaw surgery [1].…”

Section: The Direction Of Mandibular Relapsementioning

confidence: 99%

“…Post-treatment relapse is an unpredictable risk of orthognathic surgery [6]. Although the broad experience with this procedure, relapse or movement of an anatomic point toward its presurgical position is not uncommon [1,2,9,19], there is controversy regarding skeletal stability after bi-maxillary operation [22,25].…”

Section: The Direction Of Mandibular Relapsementioning

confidence: 99%

The Direction of Double-Jaw Surgery Relapse for Correction of Skeletal Class III Deformity: Bilateral Sagittal Split Versus Intraoral Vertical Ramus Setback Osteotomies

Al-Delayme

Alsagban

Ahmed³

et al. 2018

J. Maxillofac. Oral Surg.

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Objectives This prospective comparative clinical trial study aims to investigate the postoperative stability of the double-jaw surgical treatment of skeletal Class III deformity and to compare two different mandibular surgical approaches. The study goal is to locate the relapsing direction of both the maxilla and the distal segment after either bilateral sagittal split ramus osteotomy (BSSO), or intraoral vertical ramus osteotomy (IVRO). Methods Twenty-two (22) patients with skeletal Class III were included in this study. The patients were treated with double-jaw surgery by LeFort I osteotomy combined with either BSSO or IVRO. Lateral cephalograms taken before (T0), immediately after (T1), and 1 year after the surgery (T2) were studied and analyzed. Result The mean mandibular setback and maxillary advancement in the BSSO group were 6.22 mm at B Point and 2.93 mm at A point with relapse percentages of 24.9 and 26.6%, respectively, while the mean mandibular setback and maxillary advancement in the IVRO group were 2.55 mm at B point and 5.89 mm at A point with relapse percentages of 22.1 and 23.5%, respectively. The magnitude of the setback significantly accounted for the relapse. Conclusion One-year follow-up revealed that the maxilla would be displaced posteriorly and inferiorly in both groups. Regarding the direction of the mandibular relapse, the mandible in BSSO surgical group was displaced forward and upward, while in IVRO surgical group, the directions were completely different in which the mandible is displaced backward and downward. Keywords Class III Á Orthognathic surgery Á Relapse Á Bilateral sagittal split osteotomy (BSSO) Á Intraoral vertical osteotomy (IVRO)

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“…Sınıf III maloklüzyonların tedavisinde uygulanan maksiller ilerletme ve mandibular geriletme ugulamalarında çift çene cerrahisinin daha stabil olduğu bulunmuştur. 22 Busby ve ark. (2002) sadece maksiller ilerletme, sadece mandibular geri alma ve çift çene cerrahi uygulanan hastaları değerlendirdiklerinde postoperatif 1. yılda çift çene cerrahisinin stabilitesini iyi bulmuşlardır.…”

Section: Cerrahi Faktörlerunclassified

Factors Effecting The Relapse in Orthognathic Surgery

Esenlik¹,

Albayrak²

2014

EÜ Dişhek Fak Derg

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ÖZETKombine ortodontik ve cerrahi yaklaşım ciddi dentofasiyal deformitelerin düzeltilmesinde sıklıkla tercih edilen tedavi seçeneğidir. Bu deformitelerin tedavisi için geçmişten günümüze kadar birçok ortognatik cerrahi prosedür geliştirilmiştir. Son otuz yılda pek çok gelişme göstermelerine rağmen günümüzde bu tekniklerin komplikasyonları, karşılaşılan relaps oranları ve bunları azaltmak amacı ile yapılan araştırmalar devam etmektedir. Relapsın etyolojisi multifaktöriyeldir ve kondillerin düzgün pozisyonlandırılması, ilerletme miktarı, tek veya çift çene cerrahisi, yumuşak dokular ve kasların adaptasyonları, mandibuler plan açısı, geriye kalan büyüme potansiyeli ve operasyon öncesi hasta yaşı ve parafonksiyonel alışkanlıklar gibi faktörlere bağlıdır. Ortognatik cerrahi sonrası relaps; dişsel ve iskeletsel olarak meydana gelmektedir. İskeletsel relapsla daha çok karşılaşılmakta ve relaps oranları uygulanan cerrahi prosedürlerin tipine, hareketin yönüne ve hareket miktarına göre değişiklik göstermektedir. Ortognatik cerrahide relapsı en aza indirmek için cerrahi öncesi hastanın özelliklerinin iyi değerlendirilmesi, iyi bir tedavi planı, cerrahi öncesi başarılı bir ortodontik tedavi, uygun ve başarılı cerrahi teknik dikkat edilmesi gereken hususlardır. Anahtar Kelimeler: Ortognatik cerrahi, relaps Abstract A combined orthodontic and surgical approach is often the treatment of choice for the correction of severe dentofacial deformities. Numerous orthognathic surgical procedures have been developed for this treatment for many years. Although many improvement of all the techniques for the last thirty years nowadays investigations to decrease complications and relapse rates still continue. The etiology of relapse is multifactorial, involving the proper positioning of the condyles, the amount of advancement, single or two jaws surgeries, adaptation of the soft tissue and muscles

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Skeletal and dental relapses after skeletal class III deformity correction surgery: single-jaw versus double-jaw procedures

Cited by 21 publications

References 16 publications

Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

The Direction of Double-Jaw Surgery Relapse for Correction of Skeletal Class III Deformity: Bilateral Sagittal Split Versus Intraoral Vertical Ramus Setback Osteotomies

Factors Effecting The Relapse in Orthognathic Surgery

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