Orthodontic movement in deciduous teeth

Consolaro, Alberto

doi:10.1590/2176-9451.20.2.016-019.oin

Cited by 6 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…The present study aimed to assess the diagnostic ability of different methods in estimating future primary molar exfoliation used as anchoring teeth for maxillary expanders. The prognosis of anchoring primary tooth exfoliation during maxillary expansion depends not only on their length and shape, 10 but also on the magnitude and duration of mechanical forces applied to them by the expanders, 11,12 leading to faster root resorption and exfoliation 15 . However, active expansion with orthopaedic forces usually lasts approximately one month, and rarely exfoliation would occur during this phase.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic ability of the primary second molar crown‐to‐root length ratio and the corresponding underlying premolar position in estimating future expander anchoring teeth exfoliation

Primožič

Canova

Rizzo

et al. 2021

Orthod Craniofacial Res

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Objectives The aim was to assess the diagnostic ability of the crown‐to‐root length ratio of the primary second molar and the position of the corresponding underlying premolar in estimating future anchoring teeth exfoliation during maxillary expansion. Setting and Sample Population Fifty‐four subjects (30 females, 24 males; 108 teeth) aged 8.2 ± 1.0 years that underwent palatal expansion. Methods The upper second premolar position of the corresponding expander anchoring primary molar was determined in relation to the ipsilateral first permanent molar half‐pulp chamber (HPC) line on panoramic radiographs. Subjective and objective (based on measurements) assessments of the crown‐to‐root length ratio of anchoring primary molars were performed. Exfoliation after the expansion was recorded over a retention period of 12 months. All the assessments were performed individually by three examiners at two 3‐week‐apart sessions, trained and calibrated before enrolment. The intra‐/inter‐examiner agreements were evaluated, and the diagnostic accuracy of the methods was calculated. Results All methods exhibited almost perfect intra‐ and at least substantial inter‐examiner agreement (Kappa >0.8 and ≥0.63, respectively). Good diagnostic accuracy was seen for the premolar position to the HPC line (0.7‐0.8), while the crown‐to‐root length ratio methods exhibited hardly sufficient accuracy. The diagnostic agreement of the methods was fair. Conclusions When primary molars are considered as anchoring teeth for maxillary expansion, the premolar position in relation to the HPC line appears to be the most valid and reliable method for predicting their stability. Despite high repeatability values, the crown‐to‐root length ratio needs a cut‐off point re‐definition to increase its predicting ability.

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Section: Discussionmentioning

confidence: 99%

Diagnostic ability of the primary second molar crown‐to‐root length ratio and the corresponding underlying premolar position in estimating future expander anchoring teeth exfoliation

Primožič

Canova

Rizzo

et al. 2021

Orthod Craniofacial Res

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“…Orthodontic forces promote stress on periodontal ligaments, followed by accumulation of mediators and bone resorption on periodontal surface of the alveolar bone in permanent or deciduous teeth alike. 10 As all roots are at a risk for some resorption during orthodontic traction, there has been no direct comparison of orthodontic effects on root resorption between permanent and deciduous teeth. 11 In the present case, the retained deciduous mandibular second molars and maxillary canine showed little root resorption even after orthodontic treatment.…”

Section: Discussionmentioning

confidence: 99%

Long-term survival of retained deciduous mandibular second molars and maxillary canine incorporated into final occlusion

et al. 2017

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Orthodontic treatment of a complex case that involves retained deciduous mandibular second molars with missing permanent successors is challenging. Usually, congenitally missing teeth are manifested with other dental anomalies that further complicate orthodontic treatment, such as retained deciduous teeth, impactions, transpositions and peg-shaped lateral incisors. Even though the long term prognosis of the retained deciduous tooth is not fully predictable, if the teeth are in good condition, the patient and clinician may incline towards a decision to preserve the deciduous teeth as long as possible. This case report demonstrates that deciduous teeth, in this case the mandibular second molars and maxillary canine, can be incorporated into final occlusion with clinically stable long-term results.

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“…When orthodontic force is applied, root resorption may be caused by stress focused on the periodontal ligament. The mechanism is similar in permanent and primary teeth [17]. However, minimal data comparing root resorption between permanent and primary teeth are available [3]; thus, further research is needed.…”

Section: Casementioning

confidence: 99%

An alternative approach for the management of missing lateral incisors through the intentional retention of primary canines

et al. 2019

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Patients with congenitally missing or undeveloped lateral incisors are less likely to have normal teeth alignment. Traditional treatment methods in these patients have been used for creating space for prosthetic treatment or close space using orthodontic treatment. A novel approach comprising the intentional retention of the primary canine followed by the positioning of the central incisor, permanent canine, primary canine, and first premolar in alignment may be considered. Using proper diagnosis, timely interventions, and orthodontic and prosthetic consultations, the primary canines could be retained in the dentition, thus maintaining the occlusal relationship and achieving aesthetic teeth alignment. Intentional preservation of primary canines may be a useful alternative for treating adolescents with agenesis of the lateral incisors.

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Orthodontic movement in deciduous teeth

Cited by 6 publications

References 1 publication

Diagnostic ability of the primary second molar crown‐to‐root length ratio and the corresponding underlying premolar position in estimating future expander anchoring teeth exfoliation

Diagnostic ability of the primary second molar crown‐to‐root length ratio and the corresponding underlying premolar position in estimating future expander anchoring teeth exfoliation

Long-term survival of retained deciduous mandibular second molars and maxillary canine incorporated into final occlusion

An alternative approach for the management of missing lateral incisors through the intentional retention of primary canines

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