Stability comparison of two different dentoalveolar expansion treatment protocols

Objective The stability of the transverse expansion in passive self-ligating bracket treatments is a debated topic in orthodontics. However, to date, only 3 reports are available in the literature, with the maximum follow-up of 3 years after the end of therapy. The present study aims to evaluate the stability of orthodontic treatment with self-ligating brackets in a 6-year follow-up period of time. Materials and methods A sample of 56 non-extractive cases (of whom 33 females, mean age 16.9, SD = 9.0 years) consecutively treated with Damon® system was retrospectively selected. All patients received fixed retainers from canine to canine in both arches at the end of treatment, and no removable retainers were provided. The mean values of the transverse intercusp, transverse centroid and transverse lingual distances were evaluated for all teeth from canines to second molars in both arches. Each measure was calculated at four timepoints: before treatment (T0), at the end of treatment (T1), one year after treatment (T2) and six years after treatment (T3). Transverse diameters were measured for all teeth, starting from the canines to the second molars, for a total of 1680 observations, and subsequently compared in order to evaluate intra-treatment and post-treatment modifications. Results There were increases in all transverse dental measurements during active treatment. A statistically significant (p < .05) reduction of the transverse diameter was found, for upper and lower premolars, from T1 to T3. Conclusion The 6-year follow-up analysis detected that the initial transverse expansion showed a statistically significant relapse in premolars. No relapse was detected at the level of canines, due to the presence of fixed retainers, and minimal at first molars.

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“…Only a few reports evaluate the long-term effects of SLBs on transverse dimensions of maxillary and mandibular arches [ 1 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Stability of transverse dental arch dimension with passive self-ligating brackets: a 6-year follow-up study

Willeit¹,

Cremonini

Willeit³

et al. 2022

Prog Orthod.

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“…However, a relapse tendency has been found in patients who were treated with these appliances for maxillary expansion after long-term evaluation[ 12 ]. A number of researchers have investigated the stability of RPE treatment, and factors such as age of the patient[ 11 , 14 ], length of retention period[ 9 ], rate of expansion, design of the device[ 15 , 16 ], and biological response of the maxillary suture[ 17 ] have been discussed in detail.…”

Section: Discussionmentioning

confidence: 99%

Seven-year follow-up of the nonsurgical expansion of maxillary and mandibular arches in a young adult: A case report

Liu

2020

WJCC

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BACKGROUND Palatal expansion treatment has been used to expand the constricted maxillary arch and has become a routine procedure in orthodontic practice over the past decades. However, the long-term stability of expansion in the permanent dentition without a surgical approach is uncertain. CASE SUMMARY We present the case of a 15-year-old boy with Class II malocclusion and constricted arches. The patient was treated with rapid palatal expansion (RPE) followed by a fixed orthodontic appliance. A 7-year follow-up evaluation was performed by analyzing cephalometric radiographs, plaster models, and photographs. The patient’s constricted maxillary and mandibular arches were relived after the expansion treatment. A Class I occlusion and normal arch form were established and maintained in the long-term. CONCLUSION RPE treatment is successful in solving constricted dental arch in the permanent dentition without a surgical approach. Permanent retention and even occlusal contact help prevent long-term relapse.

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“…Total appointment time and treatment length could be shorter due to the fulfillment of both objectives in most cases. However, no differences in the positions of incisors and the transverse dimension changes of the maxillary arch were found when self-ligated appliances and conventional-ligated appliances plus Quad-Helix were compared [91]. There is insufficient evidence to justify or contraindicate its use in surgical orthodontics in patients with CL ± CP [30].…”

Section: Surgical Management Of Maxillo-mandibular Asymmetry: Alternative Strategies In the Correction Of Uclp And Application Of Surgerymentioning

confidence: 99%

Alternative Craniofacial Orthodontics Treatment Approaches for Differential Severity in Patients with Unilateral Cleft Lip with/without Palate

Gómez-Gil¹

2024

Recent Advances in the Treatment of Orofacial Clefts

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The treatment of patients with cleft lip with/without cleft palate is still a challenge for its correct team management. The fact that not all clefts are alike, based on anatomical findings and ortho/surgical alternatives used in their correction, requires that clinicians -working in interdisciplinary or multidisciplinary teams- direct efforts not only to repair the facial and oral characteristics of the cleft, but also to work in the context of the patient’s craniofacial growth and development, tri-dimensionally affected by this type of craniofacial difference. The first part of this chapter is focused on the diagnostic approach for patients with unilateral cleft lip and palate (UCLP), using a modified version of the GOSLON yardstick (GOSLON+) that considers not only dental components but also 3D facial aspects of a complex malocclusion originated from this congenital malformation. Second, current treatment alternatives based on patient’s stages of dental development and cleft width, using either straight-wire or passive self-ligation appliances are presented, directed to avoid dental prosthetic replacements if possible. Finally, our treatment algorithms summarized in a step-by-step fashion the treatment of such differences with approaches that will focus on these two key aspects, essential for a successful, patient-based, interdisciplinary treatment protocol.

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Stability comparison of two different dentoalveolar expansion treatment protocols

Cited by 18 publications

References 27 publications

Stability of transverse dental arch dimension with passive self-ligating brackets: a 6-year follow-up study

Stability of transverse dental arch dimension with passive self-ligating brackets: a 6-year follow-up study

Seven-year follow-up of the nonsurgical expansion of maxillary and mandibular arches in a young adult: A case report

Alternative Craniofacial Orthodontics Treatment Approaches for Differential Severity in Patients with Unilateral Cleft Lip with/without Palate

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