A radiographic analysis of computer prediction in conjunction with orthognathic surgery

Loh, Sharon; Heng, Jee K.; Ward-Booth, Peter; Winchester, Lindsay; McDonald, Fraser

doi:10.1054/ijom.2001.0089

Cited by 35 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4,5 There have been a number of sophisticated techniques available for orthognathic surgical treatment planning. [6][7][8][9][10][11][12][13][14][15][16][17][18] However, despite good surgical technique, in cases of complex two-jaw surgery, anatomic obstacles, errors in mounting, model surgery and intermediate splint fabrication, unintended malpositioning of the mandibular condyle, and mistakes in measurement of the external and internal reference points in the operative procedure can make a significant discrepancy in the maxillary repositioning between the STO and surgical result. 10,17,[19][20][21][22][23][24][25][26][27] In some instances, inaccurate placement of the maxilla results in an unwanted repositioning of the mandible and less than an ideal functional and esthetic outcome.…”

Section: Introductionmentioning

confidence: 99%

Surgical Accuracy of Maxillary Repositioning According to Type of Surgical Movement in Two-Jaw Surgery

Choi

Baek

2009

The Angle Orthodontist

View full text Add to dashboard Cite

Objective:To compare the surgical accuracy of the maxillary repositioning according to the maxillary surgical movement type (SMT) in two-jaw orthognathic surgery (TJOS). Materials and Methods:The samples consisted of 52 Korean young adult patients with skeletal Class III malocclusion treated with TJOS by one surgeon. Lateral cephalograms were taken 1 month before (T0) and 1 day after surgery (T1). The samples were allocated into maxillary advancement (MA), total setback (MS), impaction (MI), and elongation (ME) according to SMT. The distance from the upper incisor tip and the mesiobuccal cusp tip of the upper first molar to the horizontal and vertical reference lines at T0 and T1 were measured. Any discrepancy between the surgical treatment objective (STO) and the surgical result less than 1 mm was regarded as accurate. The accuracy rate (AR [number of the accurate sample/number of the sample] ϫ1000) and the surgical achievement ratio (SAR [amount of movement in surgical result/amount of movement in STO] ϫ100) were calculated. Analysis variance (ANOVA) and crosstab analyses were used for statistical analysis. Results: Although the MS (69.2%) and MI (69.0%) showed a lower AR than the MA (87.5%) and ME (83.3%), there was no significant difference in the distribution of accurate and inaccurate samples among the groups. The mean discrepancy between the STO and the surgical result was less than 1 mm in all groups. Although the ME (93.54%) showed a tendency of undercorrection and the MS (107.10%) and MI (105.42%) a tendency of overcorrection, there was no significant difference in SAR among the groups. Conclusions: If the surgical plan and procedure is done with caution, the MS and MI can be regarded as just as accurate a procedure as the MA and ME. (Angle Orthod. 2009;79:306-311.)

show abstract

Section: Introductionmentioning

confidence: 99%

Surgical Accuracy of Maxillary Repositioning According to Type of Surgical Movement in Two-Jaw Surgery

Choi

Baek

2009

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…For some of the mandibular procedures, a genioplasty was carried out 1,14,13,29,31,33,36 . Crucially, a number of studies did not take into account surgical accuracy, postoperative orthodontics or relapse 9,8,11,14,13,16,27,28,31 , any or all of which may have been the cause of the inaccuracy of the prediction planning. The use of different methods of superimposition, reference lines, landmarks, software versions and methods of presenting results makes comparisons between the different studies difficult.…”

mentioning

confidence: 99%

The validity of a computer-assisted simulation system for orthognathic surgery (CASSOS) for planning the surgical correction of class III skeletal deformities: single-jaw versus bimaxillary surgery

Jones¹,

Khambay²,

McHugh³

et al. 2007

International Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

“…In additi on to diffi culty in locati ng A point, according to others authors 12 positi oning the apex of upper incisors in the cephalometric view is not so easy, therefore there was signifi cant diff erence for the SNA and U1/A.perp measurements in postsurgical comparisons.…”

Section: Discussionmentioning

confidence: 98%

Comparison between Manual and Software Surgical Planning Predictions in Orthognathic Surgery

Ordobazari¹,

Davoudian²,

Ordobazari³

2010

Pesq Bras Odontoped Clin Integr

View full text Add to dashboard Cite

RESUMO ABSTRACTProcedimentos cirúrgicos ortognáti cos; Validação de programas de computador; Má oclusão de Angle classe III.Orthognathic surgical procedures; Soft ware validati on; Malocclusion, Angle class III. Finally, measured the rate of skeletal movements at in three dimensional of spaces. Fift een angular and linear variables were measured, and the results, analyzed using the stati sti cal soft ware stati sti cs. For each pati ent, the manual and computer soft ware predicti on before and aft er surgery were compared with each other. The paired t-test was used to evaluate possible diff erences between manual and computer soft ware predicti on (p<0.05). DESCRITORES KEYWORDS Results:The diff erence of the variables of the soft ware predicti on in the pre and postsurgical stages in comparison with standard manual predicti on method was insignifi cant. Conclusion: Dolphin Imaging soft ware (version 10.0) has a good accuracy for predicti on of pre and postsurgical outcome of orthognathic samples.

show abstract

A radiographic analysis of computer prediction in conjunction with orthognathic surgery

Cited by 35 publications

References 12 publications

Surgical Accuracy of Maxillary Repositioning According to Type of Surgical Movement in Two-Jaw Surgery

Surgical Accuracy of Maxillary Repositioning According to Type of Surgical Movement in Two-Jaw Surgery

The validity of a computer-assisted simulation system for orthognathic surgery (CASSOS) for planning the surgical correction of class III skeletal deformities: single-jaw versus bimaxillary surgery

Comparison between Manual and Software Surgical Planning Predictions in Orthognathic Surgery

Contact Info

Product

Resources

About