Treatment of Adults with Anterior Mandibular Teeth Crowding: Reliability of Little’s Irregularity Index

Antoszewska-Smith, Joanna; Bohater, M; Kawala, Maciej; Sarul, Michał; Rzepecka-Skupień, Małgorzata

doi:10.1155/2017/5057941

Cited by 7 publications

(5 citation statements)

References 40 publications

(32 reference statements)

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“…After molding the relevant jaw and preparing the cast, the following items were examined: (7) Determining the distal movement of the canine tooth independent of other anterior teeth towards the space obtained from the extraction of the first deciduous molars by comparing the distance between the mesial surface of lateral teeth to the distal surface of canine (from contact point) on both sides (8) Determination of anterior crowding was performed by Little criterion [ 19 ] and by measuring the total overflow resulting from crowding in the distance from canine to canine. The resulting number was placed in each of these groups: no crowding, 0 mm; light crowding, 1 to 3 mm; medium crowding, 4 to 6 mm; severe crowding, 7 to 9 mm; and very severe crowding, 10 mm …”

Section: Methodsmentioning

confidence: 99%

“…(8) Determination of anterior crowding was performed by Little criterion [ 19 ] and by measuring the total overflow resulting from crowding in the distance from canine to canine. The resulting number was placed in each of these groups: no crowding, 0 mm; light crowding, 1 to 3 mm; medium crowding, 4 to 6 mm; severe crowding, 7 to 9 mm; and very severe crowding, 10 mm…”

Section: Methodsmentioning

confidence: 99%

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Investigating the Factors Affecting the Need for Unilateral Space Maintainer for First Primary Molars in Late Mixed Dentition

Heidari

Mokhtari

Hamrah

et al. 2022

BioMed Research International

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Background. Premature loss of deciduous teeth can lead to loss of space and have a negative effect on occlusion. The use of space maintainers can reduce the severity of problems such as crowding. However, the literature is controversial regarding the effects of early loss of primary first molars The aim of this study was to determine the factors affecting the need for unilateral space maintainer for the first deciduous molars in late mixed dentition. In this cross-sectional study, fifty children between 6 to 8 years who had lost a primary first molar unilaterally later than 6 months ago were randomly selected. Midline deviation, molar and canine relationships at both sides, facial growth pattern, and the amount of space loss were all assessed. Data were analyzed using SPSS version 25 via one-sample t-test, paired t-test, and linear regression ( alpha = 0.05 ). Methods. In this cross-sectional study, 47 children aged 8 to 10 years with early unilaterally loss of first primary molar in the past 6 months were randomly selected. First, the type of occlusion based on the angle molar relationship and the growth pattern of face based on the Hall and Farkas and midline were assessed. Anterior crowding was measured. SPSS 25 program and Chi-square, t-test, ANOVA, and linear regression were used to analyze the data. A significance level of 0.05 was considered. Results. The results showed that the amount of space loss is 0.56 mm ( maxilla = 0.54 and mandible = 0.58 ), which is not clinically significant, and there is no need for space maintainer. Increasing age ( p = 0.021 ) and increasing the percentage ratio of facial pattern ( p = 0.009 ) significantly reduced the space loss and increased the duration of tooth loss ( p = 0.002 ), and molar relationship in the control side ( p = 0.05 ) and increasing the canine to lateral distance ( p = 0.016 ) significantly increased the space loss. Other factors such as crowding, midline deviation, and canine relationship on the control side did not have significant effects on space loss. Conclusion. Space loss due to extraction of the first primary molars in late mixed dentition was neither statistically nor clinically significant. However, in cases of severe crowding, the vertical growth pattern of the face, and molar relationship, further studies are needed, and follow-up of patients is recommended.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Investigating the Factors Affecting the Need for Unilateral Space Maintainer for First Primary Molars in Late Mixed Dentition

Heidari

Mokhtari

Hamrah

et al. 2022

BioMed Research International

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“…In the present study, the bonding procedure of lingual retainers, in individuals treated with or without extraction was evaluated. According to Little's Irregularity Index, it was reported that crowding up to 3 mm: expansion, crowding between 3 and 5 mm: interproximal enamel reduction, and crowding above 5 mm: treatment with extraction may prevent the relaps [17]. However, the treatments with non-extraction or extraction of first premolars showed a similar tendency to incisor relapse [18].…”

Section: Discussionmentioning

confidence: 99%

Effect of self-etch primer application on the bond failure rate of a mandibular bonded lingual retainer

Ozlu

Yazıcıoğlu

2022

BMC Oral Health

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Background The aim of this study was to examine the effect of self-etch primer (SEP) application on the bond failure rate of a mandibular bonded lingual retainer over 24 months. Methods The average age of the 86 individuals included in this study was 17 years 4 months. After the removal of the orthodontic appliances, the lingual retainers, which were made of six-stranded stainless steel wire, were bent and bonded onto the lingual surface of all mandibular anterior teeth. The study was performed using a split-mouth design. In the study group, the SEP was administered to the teeth’s lingual surfaces. In the control group, they were etched using 37% phosphoric etchant liquid gel. After etching, the primer was applied. The adhesive resin was applied and the retainer was fitted. The patients were re-evaluated over 24 months. The first bond failures and the amount of adhesive remaining on the tooth were recorded as the adhesive remnant index (ARI) scores. The chi-square test was used to compare the bond failure rates (P = 0.231) and ARI scores between the groups (P = 0.162). The survival rates of the retainers were estimated using the Kaplan–Meier test (P = 0.237). The significance level was P < 0.05. Results The bond failure rates, ARI scores, and survival rates did not differ significantly between the groups. Conclusions The results of this study demonstrated that an SEP can be used successfully in mandibular lingual retainer bonding. In situations where saliva isolation is difficult, bonding a fixed lingual retainer with SEP is recommended.

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“…Space maintainers can be utilized for this purpose. Early primary molar loss might result in a reduction in arch length, increasing the severity of crowding/malocclusion; therefore, in the affected patient, every effort should be made to preserve the natural leeway space [29]. The unilateral loss of a primary canine or first molar can result in a significant centerline disparity and mesial migration of the buccal segments, which is another critical clinical condition to preserve space [38].…”

Section: Prophylaxismentioning

confidence: 99%

Mandibular Crowding: Diagnosis and Management—A Scoping Review

Patano

Malcangi

Inchingolo

et al. 2023

JPM

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Background: Crowding is the most frequent malocclusion in orthodontics, with a strong hereditary tendency. It already occurs in pediatric age and is mainly hereditary. It is a sign of a lack of space in the arches, and is not self-correcting, but can worsen over time. The main cause of the worsening of this malocclusion is a progressive and physiological decrease in the arch perimeter. Methods: To identify relevant studies investigating the most common possible treatments for mandibular dental crowding, a comprehensive search of PubMed, Scopus and Web of Science was conducted encompassing the last 5 years (2018–2023) using the following MeSH: “mandibular crowding AND treatment” and “mandibular crowding AND therapy “. Results: A total of 12 studies were finally included. An orthodontic treatment cannot ignore the concept of “guide arch”, which concerns the lower arch, because of the objective difficulty in increasing its perimeter; the bone structure of the lower jaw is more compact than that of the upper one. Its expansion, in fact, is limited to a slight vestibularization of the incisors and lateral sectors that may be associated with a limited distalization of the molars. Conclusions: There are various therapeutic solutions available to the orthodontist, and a correct diagnosis through clinical examination, radiographs and model analysis are essential. The decision of how to deal with crowding cannot be separated from an overall assessment of the malocclusion to be treated.

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Treatment of Adults with Anterior Mandibular Teeth Crowding: Reliability of Little’s Irregularity Index

Cited by 7 publications

References 40 publications

Investigating the Factors Affecting the Need for Unilateral Space Maintainer for First Primary Molars in Late Mixed Dentition

Investigating the Factors Affecting the Need for Unilateral Space Maintainer for First Primary Molars in Late Mixed Dentition

Effect of self-etch primer application on the bond failure rate of a mandibular bonded lingual retainer

Mandibular Crowding: Diagnosis and Management—A Scoping Review

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