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Bastos RM, Haas Junior OL, Piccoli V, da Rosa BM, de Oliveira RB, de Menezes LM. Effects of minimally invasive surgical and miniscrew-assisted rapid palatal expansion (MISMARPE) on the nasal cavity and upper airway: a comparative cohort study. Int J Oral Maxillofac Surg 2024; 53:821-828. [PMID: 38609790 DOI: 10.1016/j.ijom.2024.03.012] [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: 06/29/2023] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024]
Abstract
This study was performed to evaluate the impact on the upper airway and nasal cavity of a new minimally invasive surgical and miniscrew-assisted rapid palatal expansion (MISMARPE) technique for the treatment of adult patients with transverse maxillary deficiency, in comparison to surgically assisted rapid palatal expansion (SARPE). Computed tomography scans of 21 MISMARPE and 16 SARPE patients were obtained preoperatively (T0) and at the end of the activation period (T1) and analysed. Linear and volumetric measurements were performed in the dental, alveolar, nasal cavity, and oropharynx regions. Generalised estimating equations were used to consider the intervention time and surgery type, and their interaction. In both groups, measurements were increased at T1 (P < 0.001), except for oropharynx volume (P > 0.05). A greater expansion in nasal cavity floor and median palatal suture was shown for MISMARPE when compared to SARPE (P < 0.001), with the same degree of expander activation (P = 0.094). A trapezoidal (coronal plane) and 'V' shape (axial plane) expansion pattern, was observed after MISMARPE. Both surgical techniques were effective for maxillary expansion in adults. However, MISMARPE was performed without osteotomy of the pterygomaxillary suture, in an outpatient setting and with local anaesthesia.
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Affiliation(s)
- R M Bastos
- Oral and Maxillofacial Surgery Service, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
| | - O L Haas Junior
- Oral and Maxillofacial Surgery Service, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - V Piccoli
- Department of Orthodontics, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - B M da Rosa
- Department of Oral and Maxillofacial Surgery, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - R B de Oliveira
- Oral and Maxillofacial Surgery Service, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - L M de Menezes
- Department of Orthodontics, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
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Pasqua BDPM, André CB, Paiva JBD, Rino Neto J. Short-term assessment of pain and discomfort during rapid maxillary expansion with tooth-bone-borne and tooth-borne appliances: randomized clinical trial. Dental Press J Orthod 2023; 28:e2322220. [PMID: 37729286 PMCID: PMC10508049 DOI: 10.1590/2177-6709.28.4.e2322220.oar] [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: 09/21/2022] [Accepted: 04/22/2023] [Indexed: 09/22/2023] Open
Abstract
OBJECTIVE The aim of this randomized clinical trial was to evaluate and compare, during the first week of rapid maxillary expansion (RME), the impact caused by two types of appliances: Hyrax and Hybrid Hyrax. METHODS Forty-two patients who met the eligibility criteria (aged 11-14 years, with transverse maxillary deficiency, posterior crossbite, and presence of maxillary first premolars and first permanent molars) were selected and randomly divided into two groups: TBB GROUP (tooth-bone-borne expander), treated with Hybrid Hyrax (12 females and 9 males, mean age 13.3 ± 1.3 years), and TB GROUP (tooth-borne expander), treated with Hyrax (5 females and 16 males, mean age 13.3 ± 1.4 years). Pain and discomfort were assessed in two times: after the first day of activation (T1) and four days after, by means of the numerical rate scale and the instrument MFIQ (Mandibular Functional Impairment Questionnaire). Descriptive statistics and the Mann-Whitney test were used for comparison between groups and between sexes. A 5% significance level was adopted. RESULTS Both appliances had a negative impact, generating pain and discomfort, and reducing functional capacity. However, the scores obtained were of low intensity and no significant differences were observed between the groups. Considering sexes, there were statistically significant differences, with the female sex presenting higher scores for pain and functional limitation. CONCLUSIONS Despite causing impact in pain and increase in the functional limitation, these changes were of low intensity, with no statistical difference between the groups. Females were more sensitive to the impact caused by the RME.
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Affiliation(s)
| | | | | | - José Rino Neto
- University of São Paulo, Department for Orthodontics (São Paulo/SP, Brazil)
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Gopinath VK, Shetty RM, Renugalakshmi A, Dharmarajan L, Prakash PSG, Jayaraman J. Reporting Quality of the Abstracts for Randomized Controlled Trials in Pediatric Dentistry. Eur J Dent 2023; 18:341-348. [PMID: 37553078 PMCID: PMC10959622 DOI: 10.1055/s-0043-1770912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023] Open
Abstract
OBJECTIVES The purpose of this study is to systematically appraise the reporting quality of abstracts for randomized controlled trials (RCT) published in pediatric dentistry using Consolidated Standards of Reporting Trials (CONSORT) for abstracts and to analyze the relationship between the characteristics of the RCT to the quality of abstracts. MATERIALS AND METHODS RCTs published in Pediatric Dentistry were retrieved from the PubMed database from 2016 to 2021. The quality of abstracts was appraised using CONSORT for abstracts checklist by two independent reviewers. STATISTICAL ANALYSIS In descriptive statistics, frequency and percentage analysis were used for categorical variables, whereas mean and standard deviation were used for continuous variables. To find the significant difference between the bivariate samples in independent groups, Mann-Whitney U test was employed. Multivariate analysis was performed using Kruskal-Wallis test and Mann-Whitney U tests. Probability value of p-value less than 0.05 was considered as statistically significant. RESULTS Two hundred abstracts were included in the study. All the abstracts adequately reported the "objective" item, whereas only 2 and 4% of abstracts adequately addressed "randomization" and "harms" items, respectively. A significant relationship was observed between the continent of first author/corresponding author, number of authors, impact factor, adherence to CONSORT guidelines, word count, focus of study, and a priori protocol registration to the quality of abstracts (p < 0.05). CONCLUSION The abstracts of the RCT included in the study did not adequately follow the CONSORT for abstract guidelines. Adherence to the reporting guidelines would improve the overall reporting quality of abstracts of RCT published in Pediatric Dentistry. The overall mean score of the abstracts was 6.80 out of 15 indicating that the abstracts did not adequately follow the CONSORT for abstract reporting guidelines.
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Affiliation(s)
- Vellore Kannan Gopinath
- University of Sharjah, College of Dental Medicine, Department of Preventive and Restorative Dentistry, Sharjah, United Arab Emirates
| | - Raghavendra M. Shetty
- Department of Clinical Sciences, College of Dentistry, Ajman University, United Arab Emirates
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, United Arab Emirates
- Adjunct Faculty, Department of Pediatric and Preventive Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research (Declared as Deemed-to-be University), Wardha, Maharashtra, India
| | - Apathsakayan Renugalakshmi
- Department of Preventive Dental Sciences, Division of Pedodontics, College of Dentistry, Jazan University, Jazan, Saudi Arabia
- Department of Pediatric and Preventive Dentistry, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Lalli Dharmarajan
- Department of Periodontics, S.R.M Dental College, Ramapuram, Chennai 600089, Tamil Nadu, India
| | | | - Jayakumar Jayaraman
- Department of Pediatric Dentistry, Virginia Commonwealth University School of Dentistry, Richmond 23298, Virginia, United States
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Three-Dimensional Evaluation Effects of Microimplant-Assisted Rapid Palatal Expansion on the Upper Airway Volume: A Systematic Review and Meta-Analysis. J Clin Med 2023; 12:jcm12051790. [PMID: 36902577 PMCID: PMC10003187 DOI: 10.3390/jcm12051790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/25/2023] Open
Abstract
Microimplant-assisted rapid palatal expansion is increasingly used clinically; however, the effect on the upper airway volume in patients with maxillary transverse deficiency has not been thoroughly evaluated yet. The following electronic databases were searched up to August 2022: Medline via Ovid, Scopus, Embase, Web of Science, Cochrane Library, Google Scholar, and ProQuest. The reference lists of related articles were also reviewed by manual search. The Revised Cochrane Risk of Bias Tool for randomized trials (ROB2) and the Risk of Bias in non-randomized Studies of Interventions (ROBINS-I) tool were used to evaluate the risks of bias of the included studies. The mean differences (MD) and 95% confidence intervals (CI) of changes in nasal cavity and upper airway volume were analyzed using a random-effects model, and subgroup and sensitivity analyses were also performed. Two reviewers independently completed the process of screening studies, extracting data, and assessing the quality of studies. In total, twenty-one studies met the inclusion criteria. After assessing the full texts, only thirteen studies were included, with nine studies selected for quantitative synthesis. Oropharynx volume increased significantly after immediate expansion (WMD: 3156.84; 95% CI: 83.63, 6230.06); however, there was no significant change in nasal volume (WMD: 2527.23; 95% CI: -92.53, 5147.00) and nasopharynx volume (WMD: 1138.29; 95% CI: -52.04, 2328.61). After retention a period, significant increases were found in nasal volume (WMD: 3646.27; 95% CI: 1082.77, 6209.77) and nasopharynx volume (WMD: 1021.10; 95% CI: 597.11, 1445.08). However, there was no significant change after retention in oropharynx volume (WMD: 789.26; 95% CI: -171.25, 1749.76), palatopharynx volume (WMD: 795.13; 95% CI: -583.97, 2174.22), glossopharynx volume (WMD: 184.50; 95% CI: -1745.97, 2114.96), and hypopharynx volume (WMD: 39.85; 95% CI: -809.77, 889.46). MARPE appears to be linked with long-term increases in nasal and nasopharyngeal volume. However, high-quality clinical trials are required to further verify the effects of MARPE treatment on the upper airway.
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Xie B, Zhang L, Lu Y. The role of rapid maxillary expansion in pediatric obstructive sleep apnea: Efficacy, mechanism and multidisciplinary collaboration. Sleep Med Rev 2023; 67:101733. [PMID: 36566679 DOI: 10.1016/j.smrv.2022.101733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/17/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022]
Abstract
This review aims to provide current knowledge about the efficacy, mechanism, and multidisciplinary collaboration of rapid maxillary expansion (RME) treatment in pediatric obstructive sleep apnea (OSA). OSA is a chronic disease characterized by progressively increasing upper airway resistance, with various symptoms and signs. Increasingly the evidence indicates that RME is a non-invasive and effective therapy option for children with OSA. Besides, the therapeutic mechanism of RME includes increasing upper airway volume, reducing nasal resistance, and changing tongue posture. Recent clinical researches and case reports also show that a multidisciplinary approach improves sleep-disordered breathing in children. Applied with adenotonsillectomy, mandibular advancement, continuous positive airway pressure, and comprehensive orthodontic treatment, RME can be more effective in recurrent or residual OSA.
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Affiliation(s)
- Bintao Xie
- Hunan Key Laboratory of Oral Health Research, China; Hunan Clinical Research Center of Oral Major Diseases and Oral Health, China; Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, 410008, Hunan, China
| | - Lingling Zhang
- Hunan Key Laboratory of Oral Health Research, China; Hunan Clinical Research Center of Oral Major Diseases and Oral Health, China; Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, 410008, Hunan, China
| | - Yanqin Lu
- Hunan Key Laboratory of Oral Health Research, China; Hunan Clinical Research Center of Oral Major Diseases and Oral Health, China; Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, 410008, Hunan, China.
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Luzzi V, DE Filippo M, Guarnieri R, Fioravanti M, Guaragna M, Marasca B, Pirro V, Altieri F, Vozza I, Ndokaj A, Brindisi G, Barbato E, Polimeni A, Zicari AM. Evaluation of nasal airway resistance in a cohort of children with primary snoring and maxillary deficiency. Minerva Dent Oral Sci 2023; 72:54-59. [PMID: 36345835 DOI: 10.23736/s2724-6329.22.04727-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The aim of this study was to test whether rapid palatal expansion is effective to improve nasal airway patency in a sample of pediatric patients with primary snoring. METHODS A group of 21 subjects, 11 girls (52%) and 10 boys (48%), with a mean age of 7.1 years (SD=1.3; range 4-9 years) were treated with a rapid maxillary expansion (RME) device. Nasal airway resistance was assessed via rhinomanometric exam before (pre-) and 6 months after (post-) the rapid palatal expansion treatment. RESULTS Data analysis showed a statistically significant increase in the mean scores of the results of the rhinomanometric exam between the pre- and post-measurements with a significant reduction in total inspiratory and expiratory air resistance values after rapid palatal expansion. CONCLUSIONS Our results show that RME treatment is associated with an improvement in nasal airway resistance due to a substantial reduction in nasal resistance associated with the orthopedic action of the orthodontic device.
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Affiliation(s)
- Valeria Luzzi
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Maria DE Filippo
- Department of Maternal, Child Health and Urological Sciences, Sapienza University, Rome, Italy
| | - Rosanna Guarnieri
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Miriam Fioravanti
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy -
| | - Mariana Guaragna
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Beatrice Marasca
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Valentina Pirro
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Federica Altieri
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Iole Vozza
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Artnora Ndokaj
- Department of Maternal, Child Health and Urological Sciences, Sapienza University, Rome, Italy
| | - Giulia Brindisi
- Department of Maternal, Child Health and Urological Sciences, Sapienza University, Rome, Italy
| | - Ersilia Barbato
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Antonella Polimeni
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Anna Maria Zicari
- Department of Maternal, Child Health and Urological Sciences, Sapienza University, Rome, Italy
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Pasqua BDPM, André CB, Paiva JB, Tarraf NE, Wilmes B, Rino-Neto J. Dentoskeletal changes due to rapid maxillary expansion in growing patients with tooth-borne and tooth-bone-borne expanders: A randomized clinical trial. Orthod Craniofac Res 2022; 25:476-484. [PMID: 34951124 DOI: 10.1111/ocr.12559] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 11/18/2021] [Accepted: 12/15/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To compare, using cone-beam computed tomography, the dentoskeletal changes in rapid maxillary expansion with tooth-bone-borne (Hybrid Hyrax) and tooth-borne (Hyrax) appliances. SETTING AND SAMPLE POPULATION Forty-two patients who met the eligibility criteria (aged 11-14 years; transverse maxillary deficiency, posterior crossbite, and presence of upper first premolars and molars) were screened and allocated into two groups: HHG (treatment with Hybrid Hyrax) and HG (treatment with Hyrax). MAIN OUTCOME MEASURES The primary outcomes included nasomaxillary dimensional changes. CBCT was performed before and 3 months after the activation phase. Measurements were performed using Dolphin® . Baseline data were compared using one-way ANOVA. For intergroup comparison, ANCOVA was used to analyze the initial age, appliance activations (mm), and mid-palatal suture maturation data as covariates. Statistical significance was set at 5%. RESULTS The premolar region in HHG showed increased skeletal changes than in HG, with the difference being 1.5 mm (0.5; 2.6) in the nasal cavity (P = .004), 1.4 mm (0.3; 2.5) in the nasal floor (P = .019), and 1.1 mm (0.2; 2.1) in the maxilla (P = .022). The molar region in HHG showed increased skeletal changes with the difference being 0.9 mm (0.2; 1.5) in the nasal cavity (P = .005), and 0.9 mm (0; 1.8) in the maxilla (P = .042) than in HG. Premolar inclination was higher in HG. CONCLUSION Hybrid Hyrax showed more skeletal changes and fewer dental side effects, especially in the first premolar region. The amount of activation influenced the higher nasal skeletal changes in the Hybrid hyrax group.
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Affiliation(s)
| | | | - João Batista Paiva
- Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Nour Eldin Tarraf
- Discipline of Orthodontics, Faculty of Dentistry, University of Sydney, Sydney, NSW, Australia
| | - Benedict Wilmes
- Department of Orthodontics, University of Düsseldorf, Düsseldorf, Germany
| | - José Rino-Neto
- Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Prévé S, García Alcázar B. Interest of miniscrew-assisted rapid palatal expansion on the upper airway in growing patients: A systematic review. Int Orthod 2022; 20:100657. [DOI: 10.1016/j.ortho.2022.100657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 10/17/2022]
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Inchingolo AD, Ferrara I, Viapiano F, Netti A, Campanelli M, Buongiorno S, Latini G, Carpentiere V, Ciocia AM, Ceci S, Patano A, Piras F, Cardarelli F, Nemore D, Malcangi G, Di Noia A, Mancini A, Inchingolo AM, Marinelli G, Rapone B, Bordea IR, Scarano A, Lorusso F, Di Venere D, Inchingolo F, Dipalma G. Rapid Maxillary Expansion on the Adolescent Patient: Systematic Review and Case Report. CHILDREN 2022; 9:children9071046. [PMID: 35884030 PMCID: PMC9317392 DOI: 10.3390/children9071046] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/11/2022] [Indexed: 11/28/2022]
Abstract
Aim: In the literature, many studies and articles are investigating new devices and approaches to achieve rapid palate expansion through the opening of the palatal suture, and evaluating the skeletal, dental, and soft tissue effects. The purpose of this review was to assess how palatal expansion is performed in adolescent patients with permanent dentition. Furthermore, it was reported as an example of successful orthodontic treatment of an 11-year-old female patient affected by maxillary skeletal transverse deficiency, in permanent dentition. Methods: A search of the literature was conducted on PubMed, Cochrane, Scopus, Embase, and Web of Science databases. Inclusion criteria were the year of publication between 2017 and 2022, patients aged 10 to 16 years in permanent dentition, with transversal discrepancy, treated with tooth-borne, bone-borne, hybrid palatal expanders. Results: A total of 619 articles were identified by the electronic search, and finally, a total of 16 papers were included in the qualitative analysis. Conclusions: From this study, it was assessed that MARPE is more predictable, and it determines a more significant expansion of the suture than the Hyrax expander, with fewer side effects.
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Affiliation(s)
- Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Irene Ferrara
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Fabio Viapiano
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Anna Netti
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Merigrazia Campanelli
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Silvio Buongiorno
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Giulia Latini
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Vincenzo Carpentiere
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Anna Maria Ciocia
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Sabino Ceci
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Assunta Patano
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Fabio Piras
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Filippo Cardarelli
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Damiano Nemore
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Angela Di Noia
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Antonio Mancini
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Grazia Marinelli
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Biagio Rapone
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
- Correspondence: (B.R.); (I.R.B.); (F.I.); Tel.: +39-3477619817 (B.R.); +40-744919319 (I.R.B.); +39-3312111104 (F.I.)
| | - Ioana Roxana Bordea
- Department of Oral Rehabilitation, Faculty of Dentistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (B.R.); (I.R.B.); (F.I.); Tel.: +39-3477619817 (B.R.); +40-744919319 (I.R.B.); +39-3312111104 (F.I.)
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy; (A.S.); (F.L.)
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy; (A.S.); (F.L.)
| | - Daniela Di Venere
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
- Correspondence: (B.R.); (I.R.B.); (F.I.); Tel.: +39-3477619817 (B.R.); +40-744919319 (I.R.B.); +39-3312111104 (F.I.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.D.I.); (I.F.); (F.V.); (A.N.); (M.C.); (S.B.); (G.L.); (V.C.); (A.M.C.); (S.C.); (A.P.); (F.P.); (F.C.); (D.N.); (G.M.); (A.D.N.); (A.M.); (A.M.I.); (G.M.); (D.D.V.); (G.D.)
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10
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Skeletal, dentoalveolar, and buccal bone changes using hybrid and tooth-borne expanders for RME and SARME in different growth stages. AUSTRALASIAN ORTHODONTIC JOURNAL 2022. [DOI: 10.2478/aoj-2022.0036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Objective
To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (Hybrid-H) and tooth-borne (TB) maxillary expanders used for rapid maxillary expansion (RME) in early and late adolescents and for surgically-assisted RME (SARME) in young adults.
Materials and methods:
This two-centre clinical study included initial and 6 months post-retention CBCT records of 60 patients (27 males, 33 females; mean age 15.7 ± 3.75 years). The cohort was divided into two groups according to the expander type (H or TB) and subdivided into a further three groups determined by cervical vertebrae maturation stages: early adolescents (EA), late adolescents (LA), and young adults (A). EA and LA patients underwent RME and young adults received a SARME.
Results:
The hybrid-designed appliance increased the internal skeletal maxillary width and nasal width more than the TB-designed appliance anteriorly in EA and posteriorly in SARME young adults. The TB expanders tipped and expanded the first premolars more than the Hybrid SARME expanders in young adults and caused a greater reduction in buccal alveolar bone thickness at the level of the first premolars and molars at the three growth stages.
Conclusion
The hybrid expanders, with relatively greater skeletal and nasal widening potential and fewer dentoalveolar side effects, were a favourable alternative to tooth-borne expanders for RME in the early and late adolescents, and for SARME in young adults.
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Ugolini A, Agostino P, Silvestrini-Biavati A, Harrison JE, Batista KB. Orthodontic treatment for posterior crossbites. Cochrane Database Syst Rev 2021; 12:CD000979. [PMID: 34951927 PMCID: PMC8709729 DOI: 10.1002/14651858.cd000979.pub3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND A posterior crossbite occurs when the top back teeth bite inside the bottom back teeth. The prevalence of posterior crossbite is around 4% and 17% of children and adolescents in Europe and America, respectively. Several treatments have been recommended to correct this problem, which is related to such dental issues as tooth attrition, abnormal development of the jaws, joint problems, and imbalanced facial appearance. Treatments involve expanding the upper jaw with an orthodontic appliance, which can be fixed (e.g. quad-helix) or removable (e.g. expansion plate). This is the third update of a Cochrane review first published in 2001. OBJECTIVES To assess the effects of different orthodontic treatments for posterior crossbites. SEARCH METHODS Cochrane Oral Health's Information Specialist searched four bibliographic databases up to 8 April 2021 and used additional search methods to identify published, unpublished and ongoing studies. SELECTION CRITERIA Randomised controlled trials (RCTs) of orthodontic treatment for posterior crossbites in children and adults. DATA COLLECTION AND ANALYSIS Two review authors, independently and in duplicate, screened the results of the electronic searches, extracted data, and assessed the risk of bias of the included studies. A third review author participated to resolve disagreements. We used risk ratios (RR) and 95% confidence intervals (CIs) to summarise dichotomous data (event), unless there were zero values in trial arms, in which case we used odds ratios (ORs). We used mean differences (MD) with 95% CIs to summarise continuous data. We performed meta-analyses using fixed-effect models. We used the GRADE approach to assess the certainty of the evidence for the main outcomes. MAIN RESULTS We included 31 studies that randomised approximately 1410 participants. Eight studies were at low risk of bias, 15 were at high risk of bias, and eight were unclear. Intervention versus observation For children (age 7 to 11 years), quad-helix was beneficial for posterior crossbite correction compared to observation (OR 50.59, 95% CI 26.77 to 95.60; 3 studies, 149 participants; high-certainty evidence) and resulted in higher final inter-molar distances (MD 4.71 mm, 95% CI 4.31 to 5.10; 3 studies, 146 participants; moderate-certainty evidence). For children, expansion plates were also beneficial for posterior crossbite correction compared to observation (OR 25.26, 95% CI 13.08 to 48.77; 3 studies, 148 participants; high-certainty evidence) and resulted in higher final inter-molar distances (MD 3.30 mm, 95% CI 2.88 to 3.73; 3 studies, 145 participants, 3 studies; moderate-certainty evidence). In addition, expansion plates resulted in higher inter-canine distances (MD 2.59 mm, 95% CI 2.18 to 3.01; 3 studies, 145 participants; moderate-certainty evidence). The use of Hyrax is probably effective for correcting posterior crossbite compared to observation (OR 48.02, 95% CI 21.58 to 106.87; 93 participants, 3 studies; moderate-certainty evidence). Two of the studies focused on adolescents (age 12 to 16 years) and found that Hyrax increased the inter-molar distance compared with observation (MD 5.80, 95% CI 5.15 to 6.45; 2 studies, 72 participants; moderate-certainty evidence). Intervention A versus intervention B When comparing quad-helix with expansion plates in children, quad-helix was more effective for posterior crossbite correction (RR 1.29, 95% CI 1.13 to 1.46; 3 studies, 151 participants; moderate-certainty evidence), final inter-molar distance (MD 1.48 mm, 95% CI 0.91 mm to 2.04 mm; 3 studies, 151 participants; high-certainty evidence), inter-canine distance (0.59 mm higher (95% CI 0.09 mm to 1.08 mm; 3 studies, 151 participants; low-certainty evidence) and length of treatment (MD -3.15 months, 95% CI -4.04 to -2.25; 3 studies, 148 participants; moderate-certainty evidence). There was no evidence of a difference between Hyrax and Haas for posterior crossbite correction (RR 1.05, 95% CI 0.94 to 1.18; 3 studies, 83 participants; moderate-certainty evidence) or inter-molar distance (MD -0.15 mm, 95% CI -0.86 mm to 0.56 mm; 2 studies of adolescents, 46 participants; moderate-certainty evidence). There was no evidence of a difference between Hyrax and tooth-bone-borne expansion for crossbite correction (RR 1.02, 95% CI 0.92 to 1.12; I² = 0%; 3 studies, 120 participants; low-certainty evidence) or inter-molar distance (MD -0.66 mm, 95% CI -1.36 mm to 0.04 mm; I² = 0%; 2 studies, 65 participants; low-certainty evidence). There was no evidence of a difference between Hyrax with bone-borne expansion for posterior crossbite correction (RR 1.00, 95% CI 0.94 to 1.07; I² = 0%; 2 studies of adolescents, 81 participants; low-certainty evidence) or inter-molar distance (MD -0.14 mm, 95% CI -0.85 mm to 0.57 mm; I² = 0%; 2 studies, 81 participants; low-certainty evidence). AUTHORS' CONCLUSIONS: For children in the early mixed dentition stage (age 7 to 11 years old), quad-helix and expansion plates are more beneficial than no treatment for correcting posterior crossbites. Expansion plates also increase the inter-canine distance. Quad-helix is more effective than expansion plates for correcting posterior crossbite and increasing inter-molar distance. Treatment duration is shorter with quad-helix than expansion plates. For adolescents in permanent dentition (age 12 to 16 years old), Hyrax and Haas are similar for posterior crossbite correction and increasing the inter-molar distance. The remaining evidence was insufficient to draw any robust conclusions for the efficacy of posterior crossbite correction.
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Affiliation(s)
- Alessandro Ugolini
- Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy
| | - Paola Agostino
- Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy
| | | | - Jayne E Harrison
- Orthodontic Department, Liverpool University Dental Hospital, Liverpool, UK
| | - Klaus Bsl Batista
- Department of Preventive and Public Dentistry, Rio de Janeiro State University, Rio de Janeiro, Brazil
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12
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Niu X, Motro M, Will LA, Cornelis MA, Cattaneo PM. Does rapid maxillary expansion enlarge the nasal cavity and pharyngeal airway? A three-dimensional assessment based on validated analyses. Orthod Craniofac Res 2021; 24 Suppl 2:124-133. [PMID: 34352162 DOI: 10.1111/ocr.12526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/14/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVES To evaluate the three-dimensional changes following rapid maxillary expansion (RME) of the nasal cavity (NC) and pharyngeal airway (PA) in growing patients, using innovative and validated evaluation methods and to investigate whether a correlation between skeletal expansion and increase in airway volume exists. SETTINGS AND SAMPLE POPULATION Records of patients who had cone beam computed tomography taken before and after orthodontic treatment with or without RME were retrospectively collected and divided into two groups: (a) RME, 39 patients (mean age 10.40 ± 1.74 years); and (b) control, 29 patients, matched for age (mean age 11.07 ± 1.45 years) and follow-up period. MATERIAL AND METHODS Total and partial volumes of the NC and the PA were calculated. The PA centerline was determined to assess the minimal cross-sectional area and hydraulic diameter. Paired and unpaired t test were applied to compare the difference between time points and between groups. One-way ANOVA and post hoc Tukey's tests were used to compare subgroups with respect to changes in palatal width and lacrimal ducts distance. RESULTS All of the NC, PA and skeletal parameters were significantly enlarged after RME. The NC volume and inter-molar distance in the RME were significantly larger compared to the control group. The initially lower mean values of minimal cross-sectional area and hydraulic diameter in the RME group when compared to the control group normalized after RME treatment. CONCLUSIONS Based on validated analyses, the NC volume increase was evident after RME in the long term after controlling for growth.
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Affiliation(s)
- Xiaowen Niu
- Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Melih Motro
- Department of Orthodontics and Dentofacial Orthopedics, Boston University, Boston, MA, USA
| | - Leslie A Will
- Department of Orthodontics and Dentofacial Orthopedics, Boston University, Boston, MA, USA
| | - Marie A Cornelis
- Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Carlton, Vic., Australia
| | - Paolo M Cattaneo
- Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Carlton, Vic., Australia
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13
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Iwasaki T, Papageorgiou SN, Yamasaki Y, Ali Darendeliler M, Papadopoulou AK. Nasal ventilation and rapid maxillary expansion (RME): a randomized trial. Eur J Orthod 2021; 43:283-292. [PMID: 33564835 DOI: 10.1093/ejo/cjab001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To assess three rapid maxillary expansion (RME) appliances in nasal ventilation. TRIAL DESIGN Three-arm parallel randomized clinical trial. METHODS Sixty-six growing subjects (10-16 years old) needing RME as part of their orthodontic treatment were randomly allocated (1:1:1 ratio) to three groups of 22 patients receiving Hyrax (H), Hybrid-Hyrax (HH), or Keles keyless expander (K). The primary outcome of nasal ventilation (pressure and velocity) and secondary outcomes (skeletal, dental, soft tissue, and nasal obstruction changes) were blindly assessed on the initial (T0) and final (T1, 6 months at appliance removal) cone-beam computed tomography (CBCT) data by applying computational fluid dynamics (CFD) method. Differences across groups were assessed with crude and adjusted for baseline values and confounders (gender, age, skeletal maturation, expansion amount, mucosal/adenoid hypertrophy, nasal septum deviation) regression models with alpha = 5%. RESULTS Fifty-four patients were analysed (19H, 21HH, 14K). RME reduced both nasal pressure (H: -45.8%, HH: -75.5%, K: -63.2%) and velocity (H: -30%, HH: -58.5%, K: -35%) accompanied with nasal obstruction resolution (H: 26%, HH: 62%, K: 50%). Regressions accounting for baseline severity indicated HH expander performing better in terms of post-expansion maximum velocity (P = 0.03) and nasal obstruction resolution (P = 0.04), which was robust to confounders. Mucosal/adenoid hypertrophy and nasal septum deviation changes were variable, minimal, and similar across groups. The HH resulted in significantly greater increase in the nasal cross-sectional area (62.3%), anterior (14.6%), and posterior (10.5%) nasal widths. Nasal obstruction resolution was more probable among younger (P = 0.04), skeletally immature (P = 0.03), and male patients (P = 0.02) without pre-treatment mucosal hypertrophy (P = 0.04), while HH was associated with marginal greater probability for obstruction resolution. CONCLUSIONS RME resulted in improvement of nasal skeletal parameters and simulated ventilation with the former being in favour of the HH and the latter not showing significant differences among the three appliances. LIMITATION Attrition in the K group due to blocked activation rods possibly leading to limited sample to identify any existing group differences. HARMS Replacement of blocked Keles expanders for finalizing treatment. PROTOCOL The protocol was not published before the trial commencement. REGISTRATION Australian and New Zealand Clinical Trial Registry; ACTRN12617001136392.
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Affiliation(s)
- Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Spyridon N Papageorgiou
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Youichi Yamasaki
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - M Ali Darendeliler
- Discipline of Orthodontics and Paediatric Dentistry, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Australia
| | - Alexandra K Papadopoulou
- Discipline of Orthodontics and Paediatric Dentistry, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Australia
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14
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Tang H, Liu P, Xu Q, Hou Y, Guo J. A comparative analysis of aerodynamic and anatomic characteristics of upper airway before and after mini-implant-assisted rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2021; 159:e301-e310. [PMID: 33541787 DOI: 10.1016/j.ajodo.2020.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/01/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The objective of this research was to observe changes in aerodynamics and anatomic characteristics of the upper airway after mini-implants assisted rapid maxillary expansion and to evaluate the correlation between the 2 changes of the upper airway in young adults. METHODS Thirty consecutive patients (mean age, 23.82 ± 3.90 years; median, 24.5 years; 9 males, 21 females) were involved. Cone-beam computed tomography was taken before activation and over 3 months. Three-dimensional models of the upper airway were reconstructed on the basis of cone-beam computed tomography. The anatomic characteristics of the upper airway, including volume, area, transverse, and sagittal diameter, were measured. The aerodynamic characteristics of the upper airway were calculated on the basis of 3-dimensional models using computational fluid dynamics. The correlation between the changes in aerodynamics and anatomic characteristics of the upper airway was explored. RESULTS The enlargements of the volume of the total pharynx, nasopharynx, and oropharynx were found (9.99%, 20.7%, and 8.84%, respectively). The minimum cross-sectional area increased significantly (13.6%). The airway resistance (R) and maximum velocity (Vmax) decreased significantly in both the inspiration and expiration phase (inspiration: R, -26.8%, Vmax, -15.7%; expiration: R, -24.7%, Vmax, -16.5%). The minimum wall shear stress reduced significantly only in the inspiration phase (-26.3%). The correlations between decreased R and increased volume and minimum cross-sectional area were observed. CONCLUSIONS Mini-implants assisted rapid maxillary expansion is an effective device for improving anatomic characteristics represented by the total volume of the upper airway and minimum cross-sectional area, which contributed to the respiratory function depending on the favorable changes of aerodynamic characteristics including resistance, velocity, and minimum wall shear stress.
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Affiliation(s)
- Hongyi Tang
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Panpan Liu
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Qiuping Xu
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Yingyue Hou
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Jing Guo
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China.
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