scholarly journals Three-Dimensional Force Measurements During Rapid Palatal Expansion in Sus scrofa

Micromachines ◽  
2016 ◽  
Vol 7 (4) ◽  
pp. 64 ◽  
Author(s):  
Kelly Goeckner ◽  
Venkatram Pepakayala ◽  
Jeanne Nervina ◽  
Yogesh Gianchandani ◽  
Sunil Kapila
Keyword(s):  
Sus Scrofa ◽  
Three Dimensional ◽  
Force Measurements ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion

scholarly journals CBCT Comparison of Dentoskeletal Effects of Haas-Type and Hyrax-Type Expanders Using Deciduous Teeth as Anchorage: A Randomized Clinical Trial

2021 ◽  
Vol 11 (15) ◽  
pp. 7110
Author(s):  
Marco Serafin ◽  
Luca Esposito ◽  
Viviana Conti ◽  
Rosamaria Fastuca ◽  
Manuel Lagravère ◽  
...  
Keyword(s):  
Primary Teeth ◽  
Statistical Significance ◽  
Three Dimensional ◽  
T Test ◽  
Mixed Dentition ◽  
Deciduous Teeth ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Clinical Changes ◽  
Skeletal Expansion

The aim of this study was to compare the three-dimensional dentoskeletal effects of Haas-type and Hyrax-type expanders using primary teeth as anchorage for rapid palatal expansion (RPE). Thirty-four subjects in mixed dentition were divided according to their expander’s type: Hyrax (n = 16; 6F, 10M; mean age 8 ± 3 years) or Haas (n = 18; 14F, 4M; mean age 8 ± 2 years). Each patient underwent CBCTs before (T0) and after RPE (T1). Dentoskeletal changes were collected. A paired sample t-test and independent t-test were used to compare each variable within the same group and between groups, respectively, with a 5% significance. The Hyrax group showed an increase in all dentoskeletal parameters; skeletal expansion was significantly increased anteriorly (1.76 mm) and posteriorly (1.93 mm). The greatest dental expansion was observed in the anchorage unit (6.47 mm), about twice as much as permanent molars (3.42 mm). The same statistical significance of Haas group measurements was observed; anteriorly skeletal expansion (2.97 mm) was greater than posteriorly (1.93 mm) and dental expansion was greater on anchored teeth (6.80 mm) than non-anchored teeth (4.57 mm). No statistical significance was observed between Hyrax and Hass groups. CBCT analysis showed that, in RPE, the dental expansion was greater than skeletal expansion. No significant or clinical changes were observed between Hyrax and Haas appliances anchored to primary teeth.

Surgically assisted rapid palatal expansion (SARPE): three-dimensional superimposition on cranial base

2022 ◽  
Author(s):  
Fábio Romano ◽  
Cássio Edvard Sverzut ◽  
Alexandre Elias Trivellato ◽  
Maria Conceição Pereira Saraiva ◽  
Tung T. Nguyen
Keyword(s):  
Three Dimensional ◽  
Cranial Base ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion

scholarly journals Three dimensional evaluation of alveolar bone changes in response to different rapid palatal expansion activation rates

2017 ◽  
Vol 22 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Brian LaBlonde ◽  
Manuel Lagravere Vich ◽  
Paul Edwards ◽  
Katherine Kula ◽  
Ahmed Ghoneima
Keyword(s):  
Alveolar Bone ◽  
Three Dimensional ◽  
Rank Test ◽  
Bone Thickness ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Group 2 ◽  
Activation Rates ◽  
Bone Height ◽  
Group 1

ABSTRACT Introduction: The aim of this multi-center retrospective study was to quantify the changes in alveolar bone height and thickness after using two different rapid palatal expansion (RPE) activation protocols, and to determine whether a more rapid rate of expansion is likely to cause more adverse effects, such as alveolar tipping, dental tipping, fenestration and dehiscence of anchorage teeth. Methods: The sample consisted of pre- and post-expansion records from 40 subjects (age 8-15 years) who underwent RPE using a 4-banded Hyrax appliance as part of their orthodontic treatment to correct posterior buccal crossbites. Subjects were divided into two groups according to their RPE activation rates (0.5 mm/day and 0.8 mm/day; n = 20 each group). Three-dimensional images for all included subjects were evaluated using Dolphin Imaging Software 11.7 Premium. Maxillary base width, buccal and palatal cortical bone thickness, alveolar bone height, and root angulation and length were measured. Significance of the changes in the measurements was evaluated using Wilcoxon signed-rank test and comparisons between groups were done using ANOVA. Significance was defined at p ≤ 0.05. Results: RPE activation rates of 0.5 mm per day (Group 1) and 0.8 mm per day (Group 2) caused significant increase in arch width following treatment; however, Group 2 showed greater increases compared to Group 1 (p < 0.01). Buccal alveolar height and width decreased significantly in both groups. Both treatment protocols resulted in significant increases in buccal-lingual angulation of teeth; however, Group 2 showed greater increases compared to Group 1 (p < 0.01). Conclusion: Both activation rates are associated with significant increase in intra-arch widths. However, 0.8 mm/day resulted in greater increases. The 0.8 mm/day activation rate also resulted in more increased dental tipping and decreased buccal alveolar bone thickness over 0.5 mm/day.

scholarly journals Modified Hyrax for Microimplant-Assisted Rapid Palatal Expansion

2022 ◽  
pp. 030157422110562
Author(s):  
Harshikkumar Parekh ◽  
Rahul Trivedi ◽  
Falguni Mehta ◽  
Renuka Patel ◽  
Niyanta Joshi
Keyword(s):  
Surgical Procedure ◽  
Three Dimensional ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Temporary Anchorage Device

Temporary anchorage device-assisted rapid maxillary expansion has widened the horizon to treat adults having maxillary transverse deficiency without any surgical procedure. Three-dimensional custom modifications have also been developed, but they can be expensive. A modification of Hyrax screw with the use of lingual sheaths is suggested for microimplant-assisted rapid palatal expansion, which can be an easy to fabricate in-office and economical option.

Three-dimensional effects of pterygomaxillary disconnection during surgically assisted rapid palatal expansion: a cadaveric study

2016 ◽  
Vol 121 (6) ◽  
pp. 602-608 ◽  
Author(s):  
Stephan Christian Möhlhenrich ◽  
Ali Modabber ◽  
Mohammad Kamal ◽  
Ulrike Fritz ◽  
Andreas Prescher ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Cadaveric Study ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Dimensional Effects

Biomechanical Effects of Rapid Palatal Expansion on the Craniofacial Skeleton with Cleft Palate: A Three-Dimensional Finite Element Analysis

2007 ◽  
Vol 44 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Xiaogang Pan ◽  
Yufen Qian ◽  
Jia Yu ◽  
Dongmei Wang ◽  
Yousheng Tang ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Cleft Palate ◽  
Nasal Cavity ◽  
Cleft Lip And Palate ◽  
Three Dimensional ◽  
Dental Arch ◽  
Craniofacial Skeleton ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion

Objective: To explore the biomechanical effects of rapid palatal expansion (RPE) on the craniofacial skeleton with cleft palate. Design: A finite element model of a patient's skull with cleft lip and palate (CLP) was generated using data from spiral computed tomographic (CT) scans. Finite elemental analysis (FEA) was performed to depict the physiological changes and stress distribution in craniofacial structures loaded with orthopedic forces that created 5 mm of displacement on the region of the maxillary first premolar and first molar crown. Patients, participants: A 14-year-old girl with left complete unilateral CLP was included in this study. Interventions: Spiral CT was carried out prior to any treatment. Main outcome measure(s): Three-dimensional (3D) features of displacement and stress distribution were analyzed following application of transverse orthopedic force. Results: Marked amount of displacement and deformation occurred in the dental region. Asymmetric displacement and deformation of UCLP under RPE were evident. The stress generated by RPE was dispersed around the cleft palate and nasal cavity, and was distributed at the buttress of the maxilla-inferior border of the nasal cavity, outboard of the orbit, and central frontal bone near the nasion. Conclusions: Application of RPE to UCLP patients induces a pyramid-like displacement of the nasomaxillary complex along with fan-like expansion of the upper dental arch. The uniqueness of RPE with UCLP, however, lies in the asymmetric expansion and dispersed stress distribution around the lateral maxilla buttress and outboard of orbit.

Sign in / Sign up

Export Citation Format

Share Document