Evaluation of Condylar Position between before and after Sagittal Split Ramus Osteotomy with Screw Fixation Combined with Repositioning Technique for Proximal Fragment in Setback Cases.

Abstract Background The purpose of this retrospective study was to evaluate the postoperative change in the position and stability of the mandibular condyle after bilateral sagittal split ramus osteotomy (BSSRO) and BSSRO with distal segmental ostectomy (DSO) in patients with facial asymmetry using 3D computed tomography. Methods The condyles of the patient diagnosed with facial asymmetry were divided into the deviated side (DS) and the non-deviated side (NDS). Group I, which was treated with BSSRO only, and Group II, which additionally received DSO along with BSSRO, were superimposed on the condyle using the pre-and postoperative 3D CT. The amount of condylar change in anteroposterior displacement, mediolateral displacement, and rotation was measured. The clinical symptoms of temporomandibular joint were also evaluated before and after surgery for each patient. Results Between Groups I and II, there was no statistically significant difference in the anteroposterior condylar position on both DS and NDS. And also, there was no statistical difference between the two groups in the mediolateral change on DS but, statistically significant difference on NDS. The change in the rotation of the condyle was observed to rotate inward from both condylar heads of Groups I and II, and a statistically significant difference was observed between the two groups on both DS and NDS. Moreover, no difference in clinical temporomandibular joint symptoms was observed after surgery in each DS and NDS condyle of the two groups. Conclusions As a result of analyzing the condylar position change of the group treated with BSSRO alone and the group treated with BSSRO and DSO in patients with facial asymmetry, there were statistically significant differences in the mediolateral displacement of NDS and the condyle rotation of NDS and DS. However, the anteroposterior condylar position did not show any difference in the bilateral condyles. In addition, since worsening clinical symptoms of bilateral temporomandibular joint were not observed before and after surgery in both groups, it is concluded that it is not necessary to accompany DSO in patients with facial asymmetry (minimum 3 mm, maximum 7 mm).

Download Full-text

Condylar Changes in Children with Posterior Crossbite after Maxillary Expansion: Tridimensional Evaluation

Children ◽

10.3390/children8010038 ◽

2021 ◽

Vol 8 (1) ◽

pp. 38

Author(s):

Rosamaria Fastuca ◽

Helga Turiaco ◽

Fausto Assandri ◽

Piero A. Zecca ◽

Luca Levrini ◽

...

Keyword(s):

Rapid Maxillary Expansion ◽

3D Analysis ◽

Maxillary Expansion ◽

3D Slicer ◽

Palatal Expansion ◽

Posterior Crossbite ◽

Rapid Palatal Expansion ◽

Before And After ◽

Condylar Position ◽

Caucasian Patients

(1) Background: To investigate condylar position in subjects with functional posterior crossbite comparing findings before and after rapid maxillary expansion (RME) treatment through 3D analysis; (2) Methods: Thirty-two Caucasian patients (14 males, mean age 8 y 8 m ± 1 y 2 m; 18 females mean age 8 y 2 m ± 1 y 4 m) with functional posterior crossbite (FPXB) diagnosis underwent rapid palatal expansion with a Haas appliance banded on second deciduous upper molars. Patients’ underwent CBCT scans before rapid palatal expansion (T0) and after 12 months (T1). The images were processed through 3D slicer software; (3) Results: The condylar position changes between T1 and T0 among the crossbite and non-crossbite sides were not statistically significant, except for the transversal axis. At T1, the condyles moved forward (y axis) and laterally (x axis), they also moved downward (z axis) but not significantly; (4) Conclusions: Condilar position in growing patients with functional posterior crossbite did not change significantly after rapid maxillary expansion.

Download Full-text

Position of the mandibular canal before and after bilateral sagittal split ramus osteotomy: a cone beam computed tomography study

British Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.bjoms.2021.05.001 ◽

2021 ◽

Author(s):

Fernanda Chiguti Yamashita ◽

Lilian Cristina Vessoni Iwaki ◽

Amanda Lury Yamashita ◽

Elen de Souza Tolentino ◽

Vinicius Eduardo de Oliveira Verginio ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Mandibular Canal ◽

Cone Beam ◽

Sagittal Split Ramus Osteotomy ◽

Before And After

Download Full-text

Skeletal stability and condylar position related to fixation method following mandibular setback with bilateral sagittal split ramus osteotomy

Journal of Cranio-Maxillofacial Surgery ◽

10.1016/j.jcms.2014.08.008 ◽

2014 ◽

Vol 42 (8) ◽

pp. 1958-1963 ◽

Cited By ~ 20

Author(s):

Young-Chea Roh ◽

Sang-Hun Shin ◽

Seong-Sik Kim ◽

George K. Sandor ◽

Yong-Deok Kim

Keyword(s):

Fixation Method ◽

Sagittal Split Ramus Osteotomy ◽

Mandibular Setback ◽

Condylar Position ◽

Skeletal Stability

Download Full-text

Efficacy of Selective Grinding Guided by an Occlusal Splint in Management of Myofascial Pain: A Prospective Clinical Trial

The Open Dentistry Journal ◽

10.2174/1874210601711010301 ◽

2017 ◽

Vol 11 (1) ◽

pp. 301-311

Author(s):

Felipe J. Fernández-González ◽

Jorge Cabero-López ◽

Aritza Brizuela ◽

Ivan Suazo ◽

Esteban Pérez-Pevida ◽

...

Keyword(s):

Temporomandibular Joint ◽

Myofascial Pain ◽

Vertical Displacement ◽

Occlusal Splint ◽

Significant Difference ◽

Before And After ◽

Skeletal Pattern ◽

Condylar Position ◽

The Stability ◽

Facial Types

Background:For patients whose centric relation (CR) has not been considered at the start and during treatment, the task of achieving an occlusal scheme that works together with the temporomandibular joint, the muscles, and the structures of the stomatognathic apparatus becomes a major concern.Objective:This study aims to describe a reproducible, predictable and to date unreported procedure of selective grinding guided by an occlusal splint and to analyze condylar position (CP) based on the skeletal pattern.Methods:A total of 72 symptomatic patients (38 females and 34 males) were classified into three groups: hyperdivergent, intermediate and hypodivergent. CP was quantified by mounted casts on a measures condyle displacement (MCD) device. Helkimo index was also performed in order to assess the severity of the temporomandibular joint (TMJ) disorders attending to clinical dysfunction, occlusal state and anamnestic dysfunction. Once the stability had been obtained, the splint was progressively reduced until the maximum intercuspation (MIC) was achieved.Results:The vertical displacement was found to be significantly different between the hyperdivergent and other two groups (p<0.01). Comparisons of MCD analysis before and after the selective grinding procedure identified a statistically significant difference in the horizontal and vertical CP (p<0.01) between the different groups whereas the Helkimo Index showed a clear improvement of TMJ disorders.Conclusion:All facial types, specially the hyperdivergent face type, showed a reduction in condylar displacement (CD) and less craniomandibular symptoms using this procedure, making it an excellent technique for clinicians.

Download Full-text

Scaphoid Non-Union: Factors Affecting the Functional Outcome of Open Reduction and Wedge Grafting with Herbert Screw Fixation

Journal of Hand Surgery (European Volume) ◽

10.1016/0266-7681(93)90114-u ◽

1993 ◽

Vol 18 (2) ◽

pp. 219-224 ◽

Cited By ~ 63

Author(s):

R. NAKAMURA ◽

E. HORII ◽

K. WATANABE ◽

K. TSUNODA ◽

T. MIURA

Keyword(s):

Surgical Treatment ◽

Functional Outcome ◽

Open Reduction ◽

Screw Fixation ◽

Functional Results ◽

Bony Union ◽

Proximal Fragment ◽

Factors Affecting ◽

Non Union ◽

Herbert Screw

50 patients with scaphoid non-union were treated by open reduction, anterior wedge bone grafting and internal fixation using the Herbert screw. Intra-operative image intensiner control enabled us to insert the screw into the scaphoid accurately. An excellent or good functional outcome was less likely when more than 5 years had elapsed since injury, the non-union was in the proximal third, when sclerosis of the proximal fragment was present, and when reduction of carpal and scaphoid deformity was unsatisfactory. These four factors are believed to be the primary determinants affecting the functional results of the surgical treatment of scaphoid non-union, even when bony union is achieved.

Download Full-text