Resolution of mandibular arch crowding in growing patients with Class I malocclusions treated nonextraction

Weinberg, Michael J; Sadowsky, Cyril

doi:10.1016/s0889-5406(96)70035-5

Cited by 76 publications

(62 citation statements)

References 15 publications

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“…Studies have consistently shown that advancement of the mandibular incisors, along with expansion of the buccal segments, occurs when crowding is alleviated during nonextraction treatment when no other appliances (eg, headgear, distalizers, lip bumpers) are used. 8,10,11 In fact, Pandis et al 8 observed a 7-to 8-degree proclination of mandibular incisors associated with crowding alleviation when Damon 2 brackets were used; their results were very similar to those obtained in the current study. The notion that incisor advancement and proclination will be significantly less using the Damon system could not be supported by this study.…”

Section: Discussionsupporting

confidence: 87%

“…In cases of Class I malocclusion with anterior crowding and treated nonextraction using conventionally ligated brackets, mandibular incisors are typically advanced and proclined. 10,11 When the Damon 2 bracket system was compared with a conventional edgewise counterpart, both groups experienced an increase in mandibular incisor proclination and mandibular transverse dimension. In fact, the only significant difference noted between groups was an increase in mandibular intermolar width in the sample treated with self-ligating brackets.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of incisor position and dental transverse dimensional changes using the Damon system

Vajaria¹,

BeGole²,

Kusnoto³

et al. 2011

The Angle Orthodontist

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Objectives: To test the hypotheses that the Damon system will maintain intercanine, interpremolar, and intermolar widths. To test subsequent hypotheses that the Damon system will not produce a significant difference in maxillary and mandibular incisor position/angulation when compared with control groups treated with conventional fixed orthodontic appliances for similar malocclusion. Materials and Methods: Subjects treated with the Damon system (N 5 27) were compared with subjects treated with a conventionally ligated edgewise bracket system (N 5 16). Subjects' pretreatment and posttreatment lateral cephalometric radiographs and dental models were scanned, measured, and compared to see whether significant differences exist between time points and between the two groups. Results: Results did not support the claimed lip bumper effect of the Damon system and showed similar patterns of crowding alleviation, including transverse expansion and incisor advancement, in both groups, regardless of the bracket system used. Conclusions: Maxillary and mandibular intercanine, interpremolar, and intermolar widths increased significantly after treatment with the Damon system. The mandibular incisors were significantly advanced and proclined after treatment with the Damon system, contradicting the lip bumper theory of Damon. Posttreatment incisor inclinations did not differ significantly between the Damon group and the control group. Patients treated with the Damon system completed treatment on average 2 months faster than patients treated with a conventionally ligated standard edgewise bracket system. (Angle Orthod. 2011;81:647-652.)

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Evaluation of incisor position and dental transverse dimensional changes using the Damon system

Vajaria¹,

BeGole²,

Kusnoto³

et al. 2011

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…Alleviating dental crowding without extractions requires an increase in arch perimeter or interproximal reductions to attain good teeth alignment (14). In the absence of distalization, the changes in arch dimensions involve transverse expansion and increased proclination of teeth.…”

Section: Discussionmentioning

confidence: 99%

A Retrospective Study to Evaluate the Intra-Arch Dimensional Changes in Moderate Crowding Cases Treated Non Extraction with a Passive Self-Ligation Appliance.

Bharadwaj¹,

Singh²,

Kannan

et al. 2017

Iran J Ortho

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Background: Non-extraction treatment protocols are better accepted by patients as well as clinicians. Among the techniques and mechanics with the potential to facilitate non-extraction treatment includes headgears, fixed sagittal correctors, transverse expansion screws and self-ligating systems. Objectives: To evaluate the intra-arch dimensional changes in moderate crowding cases, treated non-extraction with a passive selfligating (Damon 3MX) appliance using digitized models and lateral cephalograms. Methods: A total of 20 patients (age group of 15 -18 years) who had undergone non extraction orthodontic treatment with the Damon 3MX appliance were selected. All the pre-treatment and post-treatment dental stone models of maxillary and mandibular arches were scanned using 3D digital scanner (Maestro 3D, Greatlakes, USA) and were converted into digital models. Various parameters undertaken were measured digitally on the computer in millimetres. Cephalometric tracings of pre and post treatment cephalograms were performed using digital cephalometrics (Nemo Ceph, version 6.0, Spain). Statistical analysis was performed using t-test. Results: More transverse expansion was observed in the region of 1 st and 2 nd premolars as compared to the inter-canine and inter

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“…1 This is achieved by both transverse expansion and proclination of the incisors. The quad-helix, developed by Ricketts, is frequently used in conventional orthodontic treatment for transverse expansion of the maxillary arch before the alignment of the teeth with straightwire edgewise appliances.…”

Section: Introductionmentioning

confidence: 99%

An assessment of conventional and self-ligating brackets in Class I maxillary constriction patients

Atik¹,

Ciğer²

2014

The Angle Orthodontist

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Objective: To evaluate two different treatment systems with regard to incisor position, transverse dimension changes in maxillary arch, changes in maxillary molar inclinations, clinical periodontal parameters, and pain intensity in patients with a Class I malocclusion. Materials and Methods: Seventeen patients (with a mean age of 14.5 years) underwent orthodontic treatment with the Roth prescribed edgewise bracket systems after expanding the maxillary arch with a quad-helix appliance, and 16 patients (with a mean age of 14.8 years) underwent orthodontic treatment with the Damon 3MX bracket system. Each subject's lateral cephalometric and posteroanterior radiographs and dental casts were obtained at the beginning of the treatment and after debonding. In addition to these, the periodontal index and pain scores were taken. Results: Cephalometric data showed that in both treatment systems, overjet value decreased and maxillary and mandibular incisors proclined. Posteroanterior measurements demonstrated a greater increase in the maxillary molar inclination in the Damon group. Significant increase of maxillary intercanine, interpremolar, and intermolar widths was shown in both systems. Periodontal index and pain score changes between different observation periods were the same. Conclusions: The conventional and Damon systems were found similar with regard to the incisor position, transverse dimension changes in maxillary arch, clinical periodontal parameters, and pain intensity. The only significant difference was that the Damon system inclined the maxillary molars more buccally than the conventional group. (Angle Orthod. 2014;84:615-622.)

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Resolution of mandibular arch crowding in growing patients with Class I malocclusions treated nonextraction

Cited by 76 publications

References 15 publications

Evaluation of incisor position and dental transverse dimensional changes using the Damon system

Evaluation of incisor position and dental transverse dimensional changes using the Damon system

A Retrospective Study to Evaluate the Intra-Arch Dimensional Changes in Moderate Crowding Cases Treated Non Extraction with a Passive Self-Ligation Appliance.

An assessment of conventional and self-ligating brackets in Class I maxillary constriction patients

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