Efficiency of Canine Retraction Using Different Reactivation Intervals
23 mai 2021 mis à jour par: Yehya Mostafa, Future University in Egypt
Comparing Canine Retraction Using Two-week, Four-week, Six-week and Eight-week Reactivation Intervals
Canine retraction after 1st premolar extracion into the extraction space is a routine treatment in orthodontics.
Orthodontic patients requiring first premolar extraction, canine retraction and maximum anchorage were recruited for this randomized controlled trial.
A search of the literature did not indicate the ideal frequency of elastomeric chain reactivation for optimum canine retraction.
The study was approved by the ethical committee.
The first premolars were extracted.
Elastomeric chains were used to retract the canine distally into the 1st premolar space.
The optimum reactivation interval was evaluated regarding the efficiency of treatment in terms of rate of canine retraction, canine tipping and rotation, root resorption and pain at the intervals of 2, 4, 6 and 8 weeks.
Three dimensional imaging, as well as digital scanning were the methods for data collection.
Aperçu de l'étude
Statut
Recrutement
Les conditions
Intervention / Traitement
Description détaillée
The canines, 2nd premolars, 1st molars and 2nd molars were bonded and banded.
Leveling and alignment was achieved.
After the first premolar extraction, temporary anchorage devices were inserted interradicular between 2nd premolar and 1st molar.
Canine retraction was performed on a 0.016" X 0.022" stainless steel arch wire.
A power arm was extended to apply the force closer to the center of resistance and achieve bodily movement.
Elastomeric chains were calibrated to deliver a force of 150g and extended from the power arm to the mini screws directly.
Recruited patients were randomly allocated to four groups according to the duration between the elastomeric chain reactivation.
Canine reactivation intervals were 2, 4, 6, or 8 weeks.
Cone beam computed tomography was performed before canine retraction and after 6 months of retraction.
Digital dental casts were taken before canine retraction and monthly for 6 months.
Type d'étude
Interventionnel
Inscription (Anticipé)
56
Phase
- N'est pas applicable
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Coordonnées de l'étude
- Nom: Reem ElShazly, MSc
- Numéro de téléphone: +201114666516
- E-mail: reemhazem24@gmail.com
Sauvegarde des contacts de l'étude
- Nom: Rudayna El-Badawy, MSc
- Numéro de téléphone: +201159218899
- E-mail: rudaynaelbadawy@gmail.com
Lieux d'étude
-
-
-
Cairo, Egypte, 11865
- Recrutement
- Future University in Egypt
-
Contact:
- Yehya Mostafa, PhD
- E-mail: yehya3d@gmail.com
-
-
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
13 ans à 30 ans (Enfant, Adulte)
Accepte les volontaires sains
Non
Sexes éligibles pour l'étude
Tout
La description
Inclusion Criteria:
- Patients requiring 1st premolar extraction (e.g bimaxillary dentoalveolar protrusion)
- Erupted full set of permanent teeth (excluding 3rd molars)
Exclusion Criteria:
- Systemic diseases that would interfere with bone metabolism
- Craniofacial syndromes
- congenitally missing or extracted permanent teeth.
- periodontally compromised patients
- smokers
- pregnant women
- previous orthodontic treatment
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Seul
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: 2-week reactivation interval
Replacement of elastomeric chain every 2 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
Comparateur actif: 4-week reactivation interval
Replacement of elastomeric chain every 4 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
Expérimental: 6-week reactivation interval
Replacement of elastomeric chain every 6 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
Expérimental: 8-week reactivation interval
Replacement of elastomeric chain every 8 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Rate of canine retraction
Délai: Baseline to 1 month
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
Baseline to 1 month
|
|
Rate of canine retraction
Délai: 1month to 2 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
1month to 2 months
|
|
Rate of canine retraction
Délai: 2 months to 3 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
2 months to 3 months
|
|
Rate of canine retraction
Délai: 3 months to 4 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
3 months to 4 months
|
|
Rate of canine retraction
Délai: 4 months to 5 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
4 months to 5 months
|
|
Rate of canine retraction
Délai: 5 months to 6 months.
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
5 months to 6 months.
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Amount of canine retraction
Délai: Baseline to 6 months
|
The change in distance measured from the canine cusp tip to the frontal plane, in millimeters; measured on CBCT
|
Baseline to 6 months
|
|
Canine tipping
Délai: Baseline to 6 months
|
CBCT images at T0 and T1 were analyzed using Invivo 5 software.
linear measurements were made from the long axis of the canines (cusp tip to root apex) to FP1 and FP2 for the upper and lower canines, respectively.
|
Baseline to 6 months
|
|
Canine rotation
Délai: Baseline to 6 months
|
The change in the angle between a line connecting the maximum mesial and distal crown convexities and FP1 and FP2, for the upper and lower canines, respectively; measured on CBCT
|
Baseline to 6 months
|
|
Canine root resorption
Délai: Baseline to 6 months
|
The change in the canine length, in millimeters, measured from cusp tip to root apex; measured on CBCT
|
Baseline to 6 months
|
|
First molar anchorage loss
Délai: Baseline to 6 months
|
The change in distance measured from the mesio-buccal cusp tip of the first molar to the frontal plane, in millimeters; measured on CBCT
|
Baseline to 6 months
|
|
Pain score
Délai: baseline to day 1
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
baseline to day 1
|
|
Pain score
Délai: Baseline to day 2
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 2
|
|
Pain score
Délai: Baseline to day 3
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 3
|
|
Pain score
Délai: Baseline to day 4
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 4
|
|
Pain score
Délai: Baseline to day 5
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 5
|
|
Pain score
Délai: Baseline to day 6
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 6
|
|
Pain score
Délai: Baseline to day 7
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 7
|
|
Pain score
Délai: Baseline to day 8
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 8
|
|
Pain score
Délai: Baseline to day 9
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 9
|
|
Pain score
Délai: Baseline to day 10.
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 10.
|
Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Les enquêteurs
- Directeur d'études: Yehya Mostafa, PhD, Future University in Egypt
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude (Réel)
1 avril 2017
Achèvement primaire (Anticipé)
1 juin 2022
Achèvement de l'étude (Anticipé)
1 juin 2022
Dates d'inscription aux études
Première soumission
23 mai 2021
Première soumission répondant aux critères de contrôle qualité
23 mai 2021
Première publication (Réel)
27 mai 2021
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
27 mai 2021
Dernière mise à jour soumise répondant aux critères de contrôle qualité
23 mai 2021
Dernière vérification
1 mai 2021
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Anomalies congénitales
- Maladies musculo-squelettiques
- Maladies stomatognathiques
- Maladies dentaires
- Anomalies du système stomatognathique
- Anomalies de la mâchoire
- Maladies de la mâchoire
- Anomalies maxillo-faciales
- Anomalies craniofaciales
- Anomalies musculosquelettiques
- Maladies mandibulaires
- Malocclusion
- Prognathisme
- Malocclusion, classe d'angle III
Autres numéros d'identification d'étude
- 20153110-8-14-2017
Plan pour les données individuelles des participants (IPD)
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Non
Informations sur les médicaments et les dispositifs, documents d'étude
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Non
Étudie un produit d'appareil réglementé par la FDA américaine
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