Slow maxillary expansion

Hicks, E. Preston

doi:10.1016/0002-9416(78)90183-5

Cited by 175 publications

(29 citation statements)

References 13 publications

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“…These results are in agreement with previous data concerning RME by Lagravere et al [20,29], which reported an average transverse increase of 6.7 mm, though our findings are greater as a result of greater maxillary width increase.…”

Section: Discussionsupporting

confidence: 94%

Comparison between rapid and mixed maxillary expansion through an assessment of dento-skeletal effects on posteroanterior cephalometry

et al. 2014

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BackgroundThe aim of this study is to compare the dento-skeletal effects of rapid maxillary expansion (RME) and mixed maxillary expansion (MME), assessed on posteroanterior (PA) cephalograms.MethodsTreatment groups consisted of 42 patients; mean age in RME group (n = 21,13 female and 8 male subjects) was 8.8 years ± 1.37 at T0 and 9.6 years ± 1.45 at T1 and mean age in MME group (n = 21, 12 female and 9 male patients) was 8.9 years ± 2.34 at T0 and 10.5 years ± 2.08 at T1. Seventeen bilateral anatomic landmarks, 16 linear (12 skeletal and 4 dental) and 4 angular measurements were assessed for each patient at T0 and T1. Data from the two groups were compared using independent sample t test (p < 0.05).ResultsAt T0, the groups were similar for all examined variables (p > 0.05). Significant and equal increase of lateronasal and maxillary and upper and lower molar widths (p < 0. 01) occurred in both groups at T1. Significant but different increases were observed for maxillary incisal, upper left first molar-lateroorbitale, and maxillary first molar angles (p < 0.001 vs. p < 0.05). Significant increases were reported for upper inter-incisal width apex (p < 0.001) and upper right first molar-lateroorbitale angle (p < 0.05) only in the RME group. At T1, differences in maxillary incisal angle (p < 0.05), upper left first molar-lateroorbitale, and maxillary first molar angles (p < 0.001) were noted.ConclusionsRME and MME were both effective to increase skeletal transverse dimensions by opening mid-palatal suture in growing patients, while MME was associated with minor dental side effects than RME.

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Section: Discussionsupporting

confidence: 94%

Comparison between rapid and mixed maxillary expansion through an assessment of dento-skeletal effects on posteroanterior cephalometry

et al. 2014

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“…This is in accordance with studies about biological responses of these appliances, which suggested that the application of slow palatal expansion in areas of periosteal growth allows normal arch dimensions to develop at any age without undue tipping of the abutment teeth [19,20] potentially avoiding periodontal dangerous effects on the abutment teeth.…”

Section: Discussionsupporting

confidence: 89%

Comparison between rapid and slow palatal expansion: evaluation of selected periodontal indices

et al. 2014

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ObjectivesThe aim of this pilot study was to evaluate the periodontal effects during rapid palatal expansion (RPE) or slow palatal expansion (SPE) and to compare them by means of some clinical indices, in order to establish the possible differences and advantages of one of these treatments in periodontal terms.Methods10 patients (aged 6 to 7 years; average age 6.3 years) were submitted to RPE treatment and other 10 patients (aged 6 to 8 years, average age 6.3 years) to SPE treatment. They were treated with the Haas expander. The selected clinical indices (plaque index, PI; papillary bleeding index, PBI; probing pocket depth, PPD) were collected three times during the treatment (t0, detected 7 days after the periodontal prophylaxis, at the beginning of the active orthodontic therapy; t1, detected during the active therapy; t2, detected after retention). All measurements were performed by the same examiner. The protocol was approved by the ethics committee.ResultsThe effects of the prophylaxis were excellent to control inflammation and dental plaque before the beginning of the orthodontic-orthopaedic treatment, as in both the two groups, the PI and the PBI values were equal to 0.In the group receiving slow expansion, the PPD remained unchanged from t0 to t1, while it significantly increased from t0 to t1 in the group of rapid expansion. At t2 the values of the two groups returned to be overlapping.ConclusionsBoth rapid and slow expansion treatments present potential irritation effect (increase of PI index and PBI index) on the periodontium, suggested by the significant increase of PI and PBI from t0 to t1 in both the two groups; therefore prophylaxis and periodic controls are very important. There are no long-term benefits that might be referred unequivocally to one of the two treatments in terms of periodontal consequences, as demonstrated by the lack of significant differences between the two groups at t2.

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“…An instructional program accessible over the internet is provided by the University of Leipzig, Germany, with a highly descriptive demonstration of RPE [38]. According to Hicks [23], first molar-tilting between 1° and 24° is partially due to the deformation of the alveolar processes, but is also due to the tilting of the teeth themselves within the alveolar processes. He also observed extrusion of the anchorage teeth.…”

Section: Suture Ossificationmentioning

confidence: 99%

“…Hicks [23] führt die Kippung der ersten Molaren zwischen 1° und 24° zum Teil auf die Verformung der Alveolarfortsätze, aber auch auf die Kippungen der Zäh-ne im Alveolarfortsatz selbst zurück. Hierbei beobachtete er auch Extrusionen der Ankerzähne.…”

Section: Resorptions and Cariesunclassified

Frequency of and Complications in the Use of RPE Appliances?Results of a Survey in the Federal State of Hesse, Germany

Schuster¹,

Borel-Scherf²,

Schopf

2005

J Orofac Orthop

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Slow maxillary expansion

Cited by 175 publications

References 13 publications

Comparison between rapid and mixed maxillary expansion through an assessment of dento-skeletal effects on posteroanterior cephalometry

Comparison between rapid and mixed maxillary expansion through an assessment of dento-skeletal effects on posteroanterior cephalometry

Comparison between rapid and slow palatal expansion: evaluation of selected periodontal indices

Frequency of and Complications in the Use of RPE Appliances?Results of a Survey in the Federal State of Hesse, Germany

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