Three-dimensional evaluation of surgically assisted implant bone-borne rapid maxillary expansion: A pilot study

Tausche, Eve; Hansen, Lars Ivar; Hietschold, Volker; Lagravère, Manuel O.; Harzer, Winfried

doi:10.1016/j.ajodo.2006.07.021

Cited by 79 publications

(61 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…11,12 Accuracy and reliability studies of landmark locations in CBCT images have been published. [13][14][15][16] Few articles, however, have reported the use of cranial base landmarks to determine the reference co-ordinate system for pre-and post-treatment image superimposition. 4,[17][18][19][20] It has been reported that using cranial base landmarks to define the reference co-ordinate system is not simple and needs improvement, since minor errors in landmark location can magnify the errors of landmarks of interest located far away from the origin of the co-ordinate system.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective optimization framework for landmark measurement error correction in three-dimensional cephalometric tomography

DeCesare

Secanell²,

Lagravère³

et al. 2013

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

The purpose of this study is to minimize errors that occur when using a four vs six landmark superimpositioning method in the cranial base to define the co-ordinate system. Cone beam CT volumetric data from ten patients were used for this study. Co-ordinate system transformations were performed. A co-ordinate system was constructed using two planes defined by four anatomical landmarks located by an orthodontist. A second co-ordinate system was constructed using four anatomical landmarks that are corrected using a numerical optimization algorithm for any landmark location operator error using information from six landmarks. The optimization algorithm minimizes the relative distance and angle between the known fixed points in the two images to find the correction. Measurement errors and coordinates in all axes were obtained for each co-ordinate system. Significant improvement is observed after using the landmark correction algorithm to position the final co-ordinate system. The errors found in a previous study are significantly reduced. Errors found were between 1 mm and 2 mm. When analysing real patient data, it was found that the 6-point correction algorithm reduced errors between images and increased intrapoint reliability. A novel method of optimizing the overlay of three-dimensional images using a 6-point correction algorithm was introduced and examined. This method demonstrated greater reliability and reproducibility than the previous 4-point correction algorithm. Dentomaxillofacial Radiology (2013Radiology ( ) 42, 20130035. doi: 10.1259 Cite this article as: DeCesare A, Secanell M, Lagravère MO, Carey J. Multiobjective optimization framework for landmark measurement error correction in three-dimensional cephalometric tomography.

show abstract

Section: Introductionmentioning

confidence: 99%

Multiobjective optimization framework for landmark measurement error correction in three-dimensional cephalometric tomography

DeCesare

Secanell²,

Lagravère³

et al. 2013

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…14 Some studies 19,20 have explained the need for a 3D-based measurement analysis when using a 3D Cartesian system. The reliability and repeatability of the identification landmarks are very high if the 3D cephalometric landmarks are defined correctly.…”

Section: Introductionmentioning

confidence: 99%

Reliability of anatomic structures as landmarks in three-dimensional cephalometric analysis using CBCT

Naji

Alsufyani

Lagravère

2014

The Angle Orthodontist

Self Cite

View full text Add to dashboard Cite

Objective: To identify anatomic structures in three dimensions and examine their reliability to be used as landmarks in a three-dimensional coordinate cephalometric analysis, using cone-beam computerized tomography (CBCT). Materials and Methods: Thirty CBCT images were randomly selected for landmark location. Forty-two anatomic landmarks, which are not included in the traditional cephalometric landmarks, were chosen based on radiographic characteristics that make them pragmatic to mark in the CBCT image slices. The principal investigator marked the full set of landmarks on the software by navigating in the X, Y, and Z axes for every image three times, with each measurement trial being at least 1 week apart. One other investigator also located the landmarks once for each image for reliability purposes. Intraclass correlation coefficients (ICCs) were used to analyze the mean differences in landmark location in all axes. Results: Intra-and interexaminer reliability for x, y, and z coordinates for all landmarks had ICC greater than 0.95 with confidence interval of 0.88-0.99. Mean measurement differences found were ,1.4 mm for all landmarks in all three coordinates. Mean measurement error differences obtained in the principal investigator's trials were primarily ,0.5 mm. Conclusion:The most reliable and reproducible landmarks tested for use in CBCT are mental foramina, infraorbital foramina, inferior hamulus, dens axis, foramina transversarium of atlas, medial and lateral condyles of the mandible, superior clinoid processes, and mid-clinoid. (Angle Orthod. 2014;84:762-772.)

show abstract

“…Therefore, BSRME provides greater orthopedic expansion (12) and this effect generates great increasing of the arch perimeter (mean of 10.5%) mainly due to the increasing of intercanine distance (7). Currently, the literature reports that BSRME provides a bone transverse gain larger than that obtained by traditional tooth-borne expansion devices (4,11,12).…”

Section: Discussionmentioning

confidence: 99%

“…Although in bone-supported rapid maxillary expansion (BSRME), the tooth expansion pattern follows the midpalatal suture expansion, the transverse increase of the molars is 0.6 times greater, in average, that of canines, while in the surgically-assisted rapid maxillary expansion (SARME) is of 1.12 times and in rapid maxillary expansion (RME) is of 2.01 times (12). Therefore, BSRME provides greater orthopedic expansion (12) and this effect generates great increasing of the arch perimeter (mean of 10.5%) mainly due to the increasing of intercanine distance (7).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The Use of Bone-Borne Distractor for Correcting the Maxillary Transverse Discrepancy in an Adult Patient

et al. 2016

View full text Add to dashboard Cite

Introduction: The objective of this study was to report the correction of a maxillary transverse discrepancy in an adult patient using Le Fort I osteotomy procedure associated with a bone-borne maxillary distractor device. Both the indications, advantages of the procedure and the use protocol were highlighted. Case Presentation: The results showed that the bone-borne distractor promoted the correction of maxillary transverse discrepancy with minimal side effects on the maxillary posterior teeth. Conclusions:The bone-borne maxillary distractor device is a good alternative for correcting the maxillary transverse discrepancy in patients undergoing Le Fort I surgery, especially in cases presenting either periodontal disease or gingival recession of maxillary posterior teeth.

show abstract

Three-dimensional evaluation of surgically assisted implant bone-borne rapid maxillary expansion: A pilot study

Cited by 79 publications

References 33 publications

Multiobjective optimization framework for landmark measurement error correction in three-dimensional cephalometric tomography

Multiobjective optimization framework for landmark measurement error correction in three-dimensional cephalometric tomography

Reliability of anatomic structures as landmarks in three-dimensional cephalometric analysis using CBCT

The Use of Bone-Borne Distractor for Correcting the Maxillary Transverse Discrepancy in an Adult Patient

Contact Info

Product

Resources

About