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Minervini G. Progress in Biomaterials and Technologies in Dentistry. Biomedicines 2024; 12:1482. [PMID: 39062055 PMCID: PMC11274469 DOI: 10.3390/biomedicines12071482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 06/29/2024] [Accepted: 07/01/2024] [Indexed: 07/28/2024] Open
Abstract
The field of dental biomedicine continues to evolve with significant advancements that are aimed at improving oral health outcomes [...].
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Affiliation(s)
- Giuseppe Minervini
- Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Dental College and Hospitals, Saveetha University, Chennai 00202, Tamil Nadu, India;
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 98201 Naples, Italy
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Ateş EM, Pamukçu H, Koç O, Altıparmak N. Effects of different expansion appliances and surgical incisions on maxillary expansion: A finite element analysis. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024:101936. [PMID: 38849083 DOI: 10.1016/j.jormas.2024.101936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/07/2024] [Accepted: 06/02/2024] [Indexed: 06/09/2024]
Abstract
PURPOSE This study aims to assess the impact of different surgical techniques and three expansion appliances on maxillary expansion in adults using finite element analysis (FEA), with a focus on maxillary displacement and stress on surrounding structures. METHODS Seven different FEA models were created to compare different surgical techniques and three different expansion appliances. Model I represented a bone-supported appliance without surgical assistance. Model II, Model III, and Model IV were surgically assisted rapid palatal expansion (SARPE) models without pterygomaxillary suture disjunction (PMD). Model V, Model VI, and Model VII were SARPE models with PMD. RESULTS The largest displacement at the anterior nasal spine (ANS) was recorded for Model II (2.95 mm). For the posterior nasal spine (PNS), the highest displacement was observed in Models V, VI, VII (2.50 mm), with the lowest in Model III (0.79 mm). Stress analysis revealed the highest stress in Model I, with models featuring PMD displaying nearly zero stress at all anatomical points, highlighting distinct expansion patterns and stress distributions between models with and without PMD. CONCLUSION SARPE models with PMD demonstrated a parallel expansion of the maxilla with minimal stress, while the miniscrew assisted rapid maxillary expansion (MARPE) model displayed transverse rotation. SARPE models without PMD exhibited a V-shaped expansion pattern. SARPE models with PMD represent an optimal approach for achieving uniform expansion and minimizing stress, with stress levels nearly negligible at all anatomical points in models with PMD.
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Affiliation(s)
- Ece Mersan Ateş
- Department of Orthodontics, School of Dentistry, Baskent University, Ankara, Turkey
| | - Hande Pamukçu
- Department of Orthodontics, School of Dentistry, Baskent University, Ankara, Turkey.
| | - Osman Koç
- Faculty of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Nur Altıparmak
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Baskent University, Ankara, Turkey
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da Silva AV, da Rosa BM, Matje PRB, Rizzatto SMD, de Oliveira RB, Haas OL, de Menezes LM. Effects of SARPE and MISMARPE on correction of transverse maxillary deficiency: A preliminary comparative evaluation. Orthod Craniofac Res 2024; 27:332-338. [PMID: 37728033 DOI: 10.1111/ocr.12712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/24/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
AIM The present study was designed to compare, on cone-beam computed tomography imaging, the skeletal and dental effects of the SARPE (Surgically assisted rapid palatal expansion) and MISMARPE (Minimally Invasive Surgical and Miniscrew-Assisted Rapid Palatal Expansion) techniques. MATERIALS AND METHODS The sample of adult patients with transverse maxillary deficiency (TMD) was divided into two groups, and scans were obtained preoperatively (T0) and immediately after completion of expansion (T1). The posterior and anterior linear transverse distances of the maxilla and the angulation of the maxillary first molars were evaluated. The data were entered into a generalized estimating equations model to verify the postoperative effects of the different techniques. RESULTS None of the techniques caused any appreciable change in the angulation of the molars. The skeletal changes were similar, with significantly greater gains in the nasal fossa and intermaxillary distance when using the MISMARPE. CONCLUSION The technique can be an effective and lower morbidity alternative to SARPE.
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Affiliation(s)
- Andreza Vieira da Silva
- Postgraduate Program in Dentistry, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Orthodontics, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bibiana Mello da Rosa
- Postgraduate Program in Dentistry, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Oral and Maxillofacial Surgery, São Lucas Hospital of Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Private Practice at Belle & Haas OrthoFacial Surgery, Porto Alegre, RS, Brazil
| | - Paulo R B Matje
- Department of Orthodontics, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Susana Maria Deon Rizzatto
- Department of Orthodontics, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rogério Belle de Oliveira
- Department of Oral and Maxillofacial Surgery, São Lucas Hospital of Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Private Practice at Belle & Haas OrthoFacial Surgery, Porto Alegre, RS, Brazil
| | - Orion L Haas
- Department of Oral and Maxillofacial Surgery, São Lucas Hospital of Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Private Practice at Belle & Haas OrthoFacial Surgery, Porto Alegre, RS, Brazil
| | - Luciane Macedo de Menezes
- Department of Orthodontics, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Chamberland S. Maxillary expansion in nongrowing patients. Conventional, surgical, or miniscrew-assisted, an update. J World Fed Orthod 2023; 12:173-183. [PMID: 37344295 DOI: 10.1016/j.ejwf.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/07/2023] [Accepted: 04/22/2023] [Indexed: 06/23/2023]
Abstract
Maxillary transverse deficiency can occur in various clinical dentoskeletal deformities and include unilateral or bilateral posterior crossbite, narrow, tapering, or high palatal arch. The development of temporary anchorage devices led to a new generation of tooth-bone-borne expansion appliance using two or four screws to apply the mechanical forces to the bone and reduce the stress to the anchored teeth. The aim of these new devices is to reduce the adverse dentoalveolar effect and achieve more skeletal expansion than conventional tooth-borne rapid palatal expansion. This article reviews the age limitation and complication and soft tissue change of nonsurgical maxillary expansion. We discuss the approach of surgical maxillary expansion with maxillary skeletal expander device. The clinical case will show the benefit of nonsurgical and surgical tooth-bone-borne rapid palatal expansion.
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Bazzani M, Cevidanes LHS, Al Turkestani NN, Annarumma F, McMullen C, Ruellas ACO, Massaro C, Rego MVNN, Yatabe MS, Kim-Berman H, McNamara JA, Franchi L, Ngan P, He H, Angelieri F, Aghazada H, Migliorati M. Three-dimensional comparison of bone-borne and tooth-bone-borne maxillary expansion in young adults with maxillary skeletal deficiency. Orthod Craniofac Res 2023; 26:151-162. [PMID: 35737876 PMCID: PMC10257795 DOI: 10.1111/ocr.12595] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To compare the transverse dental and skeletal changes in patients treated with bone-anchored palatal expander (bone-borne, BB) compared to patients treated with tooth and bone-anchored palatal expanders (tooth-bone-borne, TBB) using cone-beam computer tomography (CBCT) and 3D image analysis. METHODS The sample comprised 30 patients with transverse maxillary discrepancy treated with two different types of appliances: bone-borne (Group BB) and tooth-bone-borne (Group TBB) expanders. CBCT scans were acquired before (T1) and after completion of maxillary expansion (T2); the interval was 5.4 ± 3.4 and 6.2 ± 2.1 months between the T1 and the T2 scans of Group TBB (tooth-bone-borne) and Group BB (bone-borne), respectively. Transverse, anteroposterior and vertical linear and angular three-dimensional dentoskeletal changes were assessed after cranial base superimposition. RESULTS Both groups displayed marked transverse skeletal expansion with a greater ratio of skeletal to dental changes. Greater changes at the nasal cavity, zygoma and orbital levels were found in Group BB. A relatively parallel sutural opening in an anterior-posterior direction was observed in Group TBB; however, the Group BB presented a somewhat triangular (V-shaped) opening of the suture that was wider anteriorly. Small downward-forward displacements were observed in both groups. Asymmetric expansion occurred in approximately 50% of the patients in both groups. CONCLUSION Greater skeletal vs dental expansion ratio and expansion of the circummaxillary regions were found in Group BB, the group in which a bone-borne expander was used. Both groups presented skeletal and dental changes, with a similar amount of posterior palate expansion. Asymmetric expansion was observed in both groups.
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Affiliation(s)
| | - Lucia H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Najla N Al Turkestani
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
- Department of Restorative and Aesthetic Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Craig McMullen
- Private Practice of Orthodontics, Brighton, Michigan, USA
| | - Antonio C O Ruellas
- Department of Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Camila Massaro
- Department of Orthodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Marcus V N N Rego
- Department of Orthodontics, Centero Universitário Uninovafapi, Teresina, Brazil
| | - Marilia S Yatabe
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Hera Kim-Berman
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - James A McNamara
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Lorenzo Franchi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Peter Ngan
- Department of Orthodontics, West Virginia University School of Dentistry, Morgantown, West Virginia, USA
| | - Hong He
- Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Fernanda Angelieri
- Department of Orthodontics, Methodist University of São Paulo, São Paulo, Brazil
| | | | - Marco Migliorati
- Department of Orthodontics, Genoa University School of Dentistry, Genoa, Italy
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Almaqrami BS, Alhammadi MS, Al-Somairi MAA, ALyafrusee ES, Xiong H, He H. Three-dimensional assessment of asymmetric mid-palatal suture expansion assisted by a customized microimplant-supported rapid palatal expander in non-growing patients: Uncontrolled Clinical Trial. Orthod Craniofac Res 2021; 25:234-242. [PMID: 34403188 DOI: 10.1111/ocr.12531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/11/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVES The objective was to evaluate the magnitude, incidence and possible factors of asymmetric expansion with a customized microimplant-supported rapid palatal expander (MARPE) in non-growing patients. SETTING AND SAMPLE POPULATION This retrospective study included a sample of 49 patients (mean age: 23.9 ± 3.9 years) treated with a customized microimplant-supported rapid palatal expander. Based on the symmetry of expansion, the sample was divided into Group S (symmetric expansion group, n = 26) and Group A (asymmetric expansion group, n = 23). METHODS Pre- and post-treatment cone-beam computed tomography (CBCT) images were superimposed to assess skeletal change in both studied groups. Seven variables were tested: unilateral crossbite, maxillary base cant, chin deviation, the initial asymmetrical position of the mid-palatal suture, split pattern of frontomaxillary suture, Angle's classification and dental arch crowding. Paired t-test and logistic regression analyses were utilized to evaluate the possible factors behind the asymmetric expansion. RESULTS There was a significant difference (P < .01) between the studied groups. The average expansion was 4.26 mm at the anterolateral maxillary walls (BB) and 3.83 mm at the greater palatine foramen region (GPF). The average expansion at the GPF was 90% of that at the BB. The frequency of asymmetric expansion was 46.9%. Among the seven tested variables, the presence of the initial asymmetric position of the mid-palatal suture is the only variable that showed correlation with asymmetric expansion. CONCLUSION Initial asymmetric position of the mid-palatal suture is considered a contributing factor of skeletal asymmetric expansion following microimplant-supported rapid palatal expansion in skeletally comparable patients.
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Affiliation(s)
- Bushra Sufyan Almaqrami
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen
| | - Maged Sultan Alhammadi
- Division of Orthodontics and Dentofacial Orthopedics, Department of Preventive Dental Sciences, Faculty of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Majedh Abdo Ali Al-Somairi
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen.,Orthodontic Department, School of Stomatology, Lanzhou University, Lanzhou, China
| | - Enas Senan ALyafrusee
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen.,Orthodontic Department, School of Stomatology, Lanzhou University, Lanzhou, China
| | - Hui Xiong
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hong He
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China
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Lopponi G, Maino BG, Dalessandri D. Rapid Palatal Expansion Should Not Be Trivialized: Two Case Reports of Unexpected Complications. Eur J Dent 2021; 15:599-605. [PMID: 34171932 PMCID: PMC8382503 DOI: 10.1055/s-0041-1728840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Rapid maxillary expansion is one of the most common orthodontic procedures performed in the pediatric population, easy to accomplish and compliance free, therefore really effective. Nevertheless, a careful diagnosis and frequent clinical follow-up appointments are necessary during the first weeks of active treatment. The purpose of this article was to report two cases of unexpected complications during orthopaedic maxillary expansion, involving two 7-year-old female patients, one presenting a saddle nose with suborbital hematoma and the other one an asymmetric palatal expansion. In both cases, the clinical situation progressively relapsed during the months following expansion appliance removal.
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Affiliation(s)
- Gaia Lopponi
- Department of Endodontics, University of Florence, Firenze, Italy.,Department of Orthodontics, University of Cagliari, Cagliari, Italy
| | - Bortolo Giuliano Maino
- Postgraduate Orthodontic School, Ferrara University, Ferrara, Italy.,Private Practice of Orthodontics, Vicenza, Italy
| | - Domenico Dalessandri
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
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Ahn HW, Kang YG, Jeong HJ, Park YG. Palatal temporary skeletal anchorage devices (TSADs): What to know and how to do? Orthod Craniofac Res 2020; 24 Suppl 1:66-74. [PMID: 33278057 DOI: 10.1111/ocr.12451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/09/2020] [Accepted: 11/29/2020] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Since palatal temporary skeletal anchorage devices (TSADs) have become important tools for orthodontic treatment, this narrative review was aimed to provide an updated and integrated guidelines for the clinical application of palatal TSADs. SETTING AND SAMPLE POPULATION A narrative review article including researches on palatal TSADs in orthodontics related to anatomy, success rate and clinical application. MATERIALS AND METHODS The anatomical characteristics, success rate and its consideration factors and clinical application of palatal TSADs based on the direction of tooth movement were evaluated. RESULTS To improve the stability of TSADs, hard tissue factors such as bone depth, cortical bone thickness, bone density and soft tissue thickness were evaluated. Anatomically risky structures, including the nasopalatine foramen, canal and the greater palatine foramen, nerve, vessel need to be identified before placement. The success rate of palatal TSADs was greater than that of the buccal inter-radicular space. Palatal TSADs have been used for various purposes because they can control tooth movement in all directions and, three-dimensionally; their applications include the retraction of anterior teeth, protraction of posterior teeth, distalization, intrusion, expansion and constriction. They can be applied directly or indirectly to the lingual arch or transpalatal arch. Design modifications using splinted 2 miniscrews have been suggested. CONCLUSION Palatal TSADs allow clinicians to perform minimally invasive and easy placement with good stability by understanding the anatomical characteristics of the palatal region, and they show good control over 3-dimensional tooth movements in various clinical cases.
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Affiliation(s)
- Hyo-Won Ahn
- Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, South Korea
| | - Yoon-Goo Kang
- Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, South Korea
| | - Hyun-Joo Jeong
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Young-Guk Park
- Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, South Korea
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Kim SJ, Ahn HW, Kim SW. Advanced interdisciplinary treatment protocol for pediatric obstructive sleep apnea including medical, surgical, and orthodontic care: a narrative review. Cranio 2020; 41:274-286. [PMID: 33092497 DOI: 10.1080/08869634.2020.1839722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To suggest an updated interdisciplinary treatment protocol for pediatric obstructive sleep apnea (POSA) based on the integration of craniofacial growth modification into medical and surgical sleep practice. METHODS PubMed, Scopus, and Cochrane library were searched up to February 2020 using keywords. Among 184 articles, 80 studies were finally included. An integrated treatment protocol for POSA encompassing craniofacial skeletal management as well as medical and surgical care was attempted. RESULTS A differential diagnostic workflow for identifying the phenotype of POSA was suggested, and a phenotype-based treatment protocol for POSA was proposed. Despite the lack of high level of evidence, timely skeletal growth modification in three dimensions using craniofacial growth potential could be valuable treatment for upper airway development in POSA patients with craniofacial phenotypic cause. CONCLUSION A novel precision treatment protocol will advance clinicians to determine the primary option or to apply the combined strategy for POSA patients.
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Affiliation(s)
- Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Hyo-Won Ahn
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Sung-Wan Kim
- Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, Korea
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Baik HS, Kang YG, Choi YJ. Miniscrew-assisted rapid palatal expansion: A review of recent reports. J World Fed Orthod 2020; 9:S54-S58. [PMID: 33023733 DOI: 10.1016/j.ejwf.2020.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 08/12/2020] [Indexed: 10/23/2022]
Abstract
The miniscrew-assisted rapid palatal expander (MARPE) has extended not only skeletal effects with fewer dental changes and but also the age limit of nonsurgical maxillary expansion treatment. Amid its gaining popularity in clinical orthodontics, our current understanding of treatment effectiveness, efficiency, and stability needs to be reassessed. In this review article, the authors have attempted to evaluate MARPE from various aspects with a focus on recent studies.
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Affiliation(s)
- Hyoung-Seon Baik
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - Yoon-Goo Kang
- Department of Orthodontics, Kyung Hee University, Seoul, Korea
| | - Yoon Jeong Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
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Hsu LF, Cheng YC, Peng HH, Yao CCJ. Simplified orthognathic surgical treatment using non-surgical asymmetric maxillary expansion: A case report. Int Orthod 2020; 18:839-849. [PMID: 32839141 DOI: 10.1016/j.ortho.2020.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/30/2020] [Accepted: 07/04/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Transverse problems can be exacerbated by highly compensated occlusion in patients with skeletal asymmetry, which makes pre-surgical decompensation harder to achieve. OBJECTIVE This case report describes a case of combined orthognathic surgery with facial asymmetry. We used pre-orthodontic surgical simulation to visualize the goal for presurgical orthodontics, planning for a one-jaw surgical treatment option. METHODS The planned asymmetric expansion was performed using a maxillary skeletal expander (MSE II) with surgical corticopuncture over only the left side before MSE activation. Surgery was performed to achieve mandibular left outward yaw rotation to correct the patient's facial asymmetry after the planned amount of expansion was reached. RESULTS The results showed substantial improvement of facial aesthetics as well as skeletal symmetry. Cooperation and communication between surgeon and orthodontist ensured that the final results were satisfactory.
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Affiliation(s)
- Li-Fang Hsu
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan Department of Dentistry, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Yu-Cheng Cheng
- Department of Oral & Maxillofacial Surgery, En Chu Kong Hospital, New Taipei City, Taiwan
| | - Hsin-Hui Peng
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, Department of Dentistry, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Chung-Chen Jane Yao
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan. Division of Orthodontics and Dentofacial Orthopaedics, Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.
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