Dentoskeletal Effects of Maxillary Protraction in Cleft Patients with Repetitive Weekly Protocol of Alternate Rapid Maxillary Expansions and Constrictions

Vieira, Gustavo da Luz; Menezes, Luciane Macedo de; Lima, Eduardo Martinelli Santayana de; Rizzatto, Susana Maria Deon

doi:10.1597/07-144.1

Cited by 30 publications

(10 citation statements)

References 26 publications

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“…Many studies have reported the short-term maxillary growth response to facemask therapy using 2-dimensional lateral cephalometric measurements. 12 However, 2-dimensional lateral images can only show the changes in an anteroposterior or a superoinferior direction as a 2-dimensional projection of a 3D structure. They cannot evaluate transverse changes or detect subtle differences between the greater and lesser segments of a cleft.…”

Section: Discussionmentioning

confidence: 99%

Bone-anchored maxillary protraction therapy in patients with unilateral complete cleft lip and palate: 3-dimensional assessment of maxillary effects

Yatabe

Garib

Faco

et al. 2017

American Journal of Orthodontics and Dentofacial Orthopedics

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Introduction The aim of this study was to 3-dimensionally assess the treatment outcomes of bone-anchored maxillary protraction (BAMP) in patients with unilateral cleft lip and palate. Methods The cleft group comprised 24 patients with unilateral cleft lip and palate and Class III malocclusion with mean initial and final ages of 11.8 and 13.2 years, respectively. The noncleft group comprised 24 noncleft patients with Class III malocclusion with mean initial and final ages of 11.9 and 12.9 years, respectively. Cone-beam computed tomography examinations were performed before and after BAMP therapy in both groups and superimposed at the cranial base. Three-dimensional displacements of maxillary landmarks were quantified and visualized with color-coded maps and semitransparent superimpositions. The t test corrected for multiple testing (Holm-Bonferroni method), and the paired t test was used for statistical comparison between groups and sides, respectively (P < 0.05). Results BAMP produced anterior (1.66 mm) and inferior (1.21 mm) maxillary displacements in the cleft group with no significant differences compared with the noncleft group. The maxillary first molars of the cleft group showed significantly greater medial displacement than did those in the noncleft group. The zygoma showed significantly greater lateral displacement at the cleft side compared with the noncleft side. Conclusions BAMP caused similar amounts of maxillary protraction in patients with and without unilateral cleft lip and palatem with discrete differences between the cleft side and the noncleft side.

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Section: Discussionmentioning

confidence: 99%

Bone-anchored maxillary protraction therapy in patients with unilateral complete cleft lip and palate: 3-dimensional assessment of maxillary effects

Yatabe

Garib

Faco

et al. 2017

American Journal of Orthodontics and Dentofacial Orthopedics

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“…In the present study, the sample consisted of patients with no previous orthodontic and orthopedic procedures when the CT scans were taken. Therefore, the difference among cleft volume values could be explained by the maxillary expansion and orthopedic protraction performed to correct the sagittal and transverse deficiency [33,34], usually performed before the secondary bone graft [35].…”

Section: Discussionmentioning

confidence: 99%

Assessment of alveolar defect volume in unilateral cleft lip and palate patients using a free software program

Picolli¹,

Menezes

Brücker³

et al. 2013

OJST

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The purpose of this study was to assess the alveolar defect volume in unilateral cleft lip and palate (UCLP) subjects using computed tomography (CT) and a free software program to evaluate the intra-and interrater measurements, and to compare the cleft volume between age and affected side. The sample of this retrospective study consisted of 20 UCLP individuals, 12 boys and 8 girls, mean age 10.3 ± 2.4 years at the beginning of orthodontic treatment. All subjects required alveolar bone grafting. CT scans of the cleft area were obtained prior to secondary bone grafting, and were analyzed using Image J. software program. The cleft volume was calculated based on axial crosssectional CT images by two raters (orthodontist and radiologist) and by the same rater (orthodontist) at two different moments. Linear mixed model, Bland-Altman, Pearson's and intraclass correlation coefficient (ICC) were used. The mean cleft volume was 7.53 ± 1.55 mm³. The intra-and inter-rater measurements were reproducible (ICC = 0.976 and 0.963, respectively) with no significant difference between them. There were no statistically significant differences in the cleft volume related to age or cleft location. The assessment of cleft volume in UCLP using CT images and a free software program was a reproducible method. There was no significant relation between alveolar defect volume and age or cleft location.

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“…There seems to be a consensus in the literature about the fact that circum-maxillary sutures are disjointed after rapid maxillary expansion, 7,17,27,29 and that RME may affect the intranasal, zygomatic-maxillary, nasomaxillary and frontonasal sutures. 19,21,30 The disjunction of some of the circummaxillary sutures may be seen in 3D reconstructions at the end of the active RME phase, but not in this study because CT scanning was performed 6 months after RME ( Figs 10, 11 and 12).…”

Section: Discussionmentioning

confidence: 99%

Cone-Beam computed tomography evaluation of maxillary expansion in twins with cleft lip and palate

Menezes

Azeredo

Weissheimer

et al. 2012

Dental Press J. Orthod.

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OBJECTIVE: The establishment of normal occlusal relationships in patients with cleft lip and palate using rapid maxillary expansion may promote good conditions for future rehabilitation. OBJECTIVE: This study describes the clinical case of monozygotic twins with unilateral cleft lip and palate at the age of mixed dentition, who were treated using the same rapid maxillary expansion protocol, but with two different screws (conventional and fan-type expansion screw). Results were evaluated using plaster models, intraoral and extraoral photographs, and Cone-Beam computed tomography (CBCT) scans obtained before the beginning of the treatment, (T1). METHODS: The patients were followed up for 6 months after maxillary expansion, when the same tests requested at T1 were obtained again for review (T2). T1 and T2 results were compared using lateral cephalometric tracings and measurements of the intercanine and intermolar distances in the plaster models using a digital caliper. RESULTS: The two types of expansion screws corrected the transverse discrepancy in patients with cleft lip and palate. The shape of the upper arches improved at 10 days after activation. CONCLUSION: CBCT scans provide detailed information about craniofacial, maxillary and mandibular changes resulting from rapid maxillary expansion. The most adequate screw for each type of malocclusion should be chosen after detailed examination of the dental arches

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Dentoskeletal Effects of Maxillary Protraction in Cleft Patients with Repetitive Weekly Protocol of Alternate Rapid Maxillary Expansions and Constrictions

Abstract: There was no significant difference between the groups in evaluation time.

Cited by 30 publications

References 26 publications

Bone-anchored maxillary protraction therapy in patients with unilateral complete cleft lip and palate: 3-dimensional assessment of maxillary effects

Bone-anchored maxillary protraction therapy in patients with unilateral complete cleft lip and palate: 3-dimensional assessment of maxillary effects

Assessment of alveolar defect volume in unilateral cleft lip and palate patients using a free software program

Cone-Beam computed tomography evaluation of maxillary expansion in twins with cleft lip and palate

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