Mesiodistal width and proximal enamel thickness of maxillary first bicuspids

Macha, Aurélio de Carvalho; Vellini-Ferreira, Flávio; Scavone-Junior, Helio; Ferreira, Rívea Inês

doi:10.1590/s1806-83242010000100010

Cited by 20 publications

(17 citation statements)

References 15 publications

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“…Proximal enamel was significantly thicker on the distal surfaces, in comparison with the mesial surfaces (Table 3). This finding is in agreement with a similar Brazilian study 8 and other investigations that suggested thresholds for proximal enamel reduction, in the interval of 0.4-0.5 mm, irrespective of the side. 5,6,9 A study in which dental crown dimensions were measured directly in the patient's mouth with a compass reported that aligned teeth had smaller mesiodistal widths and larger buccolingual measurements.…”

Section: Discussionsupporting

confidence: 94%

“…This proce- 12 Interproximal enamel stripping may be used to solve cases of mild to moderate crowding. 1,2,4,8 This therapeutic alternative may be performed in cases of Class l arch-length discrepancies with orthognathic profiles; minor Class ll dental malocclusions, especially those in which patients have stopped growing; and Bolton tooth-size discrepancies. 12 A space gain of 8.9 mm may be achieved in the dental arches by using enamel stripping techniques, not limited to the anterior teeth.…”

Section: Discussionmentioning

confidence: 99%

“…8 Nevertheless, it is also clinically relevant to carry out experimental studies that provide accurate estimate numbers relative to the crown dimensions and proximal enamel thickness for, at least, the anterior teeth and bicuspids. These values may serve as parameters for performing stripping during orthodontic treatment.…”

Section: Discussionmentioning

confidence: 99%

“…8 Based on this methodological premise, 40 sound, human, mandibular, second bicuspids were collected from a human teeth bank associated with a public university located in Goiânia, Goiás, Brazil. The teeth were divided into two groups, 20 right mandibular second bicuspids and 20 left mandibular second bicuspids, and randomly numbered from one to twenty.…”

Section: Samplementioning

confidence: 99%

“…Enamel stripping has been used routinely worldwide, including the United States of America, 4,6 Europe, 1,7 Turkey 5 and Brazil 8 because, while providing correction of tooth-arch discrepancies, it increases treatment stability [6][7][8] and holds the transversal dental arch dimensions and anterior inclinations constant. 1,5,9 Nevertheless, it is important to estimate proxi-…”

Section: Introductionmentioning

confidence: 99%

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Crown dimensions and proximal enamel thickness of mandibular second bicuspids

et al. 2011

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To achieve proper recontouring of anterior and posterior teeth, to obtain optimal morphology during enamel stripping, it is important to be aware of dental anatomy. This study aimed at evaluating crown dimensions and proximal enamel thickness in a sample of 40 extracted sound, human, mandibular, second bicuspids (20 right and 20 left). Mesiodistal, cervico-occlusal and buccolingual crown dimensions were measured using a digital caliper, accurate to 0.01 mm. Teeth were embedded in acrylic resin and cut along their long axes through the proximal surfaces to obtain 0.7 mm-thick central sections. Enamel thickness on the cut sections was measured using a perfilometer. Comparative analyses were carried out using the Student's-t test (α = 5%). The mean mesiodistal crown widths for right and left teeth were 7.79 mm (± 0.47) and 7.70 mm (± 0.51), respectively. Mean cervico-occlusal heights ranged from 8.31 mm (± 0.75) on the right to 8.38 mm (± 0.85) on the left teeth. The mean values for the buccolingual dimension were 8.67 mm (± 0.70) on the right and 8.65 mm (± 0.54) on the left teeth. The mean enamel thickness on the mesial surfaces ranged from 1.35 mm (± 0.22) to 1.40 mm (± 0.17), on the left and right sides, respectively. On the distal surfaces, the corresponding values were 1.44 mm (± 0.21) and 1.46 mm (± 0.12). No significant differences were found between measurements for right and left teeth. However, enamel thickness was significantly greater on the distal surfaces, compared with the mesial surfaces.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Samplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crown dimensions and proximal enamel thickness of mandibular second bicuspids

et al. 2011

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Does surface enamel composition and characteristics vary with inter proximal enamel reduction?

Poovattil,

Sathyanarayana,

Padmanabhan

2024

Clin Oral Invest

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Objective :This study aimed to evaluate the chemical composition of the proximal enamel surface and the surface characteristics subjected to different extents of Inter-proximal reduction(IPR) in a clinical setting Materials and methods:Premolars of orthodontic patients which were designated for extraction were subjected to .2mm,.3 mm and .5 mm of IPR. After one month the teeth were extracted and the teeth were subjected to Scanning Electron Microscope (SEM) and Energy Dispersive X ray Spectroscopy (EDX).Results: Calcium Phosphorous stoichiometric ratios for all the four groups assessed with EDX was compared using Mann Whitney U test (0.86, 0.76, 0.56, 0.64 respectively) and it was statistically insigni cant (p=0.163). The SEM images of the three experimental groups (taken at magni cation of 500X and 2000X showed that the enamel surfaces were irregular and rough compared to the honey comb appearance of the unstripped group. Small areas of erosion of enamel surface were seen in Group I (0.2mm) under 2000X magni cation compared to Group IV (control) which showed typical arrangement of enamel rods in alternating orientation Conclusions:On analyzing the surface characteristics of enamel using SEM between the stripped and unstripped surfaces, there were irregularities and roughness seen in stripped surface whereas honey comb pattern was observed in unstripped enamel surfaces. The elements found in unstripped and stripped enamel surfaces were calcium, phosphorous, carbon, oxygen and nitrogen. Although the calcium and phosphorus were high in the 0.5mm IPR group, the difference between stripped and unstripped enamel surfaces were statistically not signi cant.Clinical relevance: IPR is a popular method of gaining space particularly in recent times.There have been concerns that IPR can remove the super cal mineral rich layer making the deeper layers more susceptible to carious attack. No study has studied the mineral content in different layers of enamel in response to IPR .The results of this study strengthens the validity of the clinical protocol employed.

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