Three-Dimensional Facial Soft Tissue Changes and Clinical Perception Following MARPE
Evaluation of Three-Dimensional Facial Soft Tissue Changes and Their Clinical Perceptibility Following Miniscrew-Assisted Rapid Palatal Expansion (MARPE)
This prospective, controlled observational study aims to evaluate three-dimensional (3D) facial soft tissue changes following miniscrew-assisted rapid palatal expansion (MARPE) and determine whether these changes are clinically perceptible to orthodontic specialists and patients.
A total of 55 postpubertal participants aged 16-25 years will be included: 40 patients undergoing MARPE as part of their routine orthodontic treatment and 15 control participants who will not undergo maxillary expansion. Treatment decisions will be made independently of study participation.
Facial soft tissue changes will be assessed using 3D facial scans. The MARPE group will be scanned before expansion (T0), immediately after active expansion (T1), and three months after expansion (T2). The control group will undergo two facial scans at comparable baseline and follow-up intervals.
Changes in facial regions, including the nose, paranasal area, midface, and upper lip, will be evaluated. Blinded orthodontic specialists will assess the clinical perceptibility of changes using standardized facial images, while participants will provide their own perception of facial changes through questionnaires. When available from routine clinical records, skeletal and dental expansion measurements will also be analyzed in relation to the observed soft tissue changes.
The study aims to clarify the magnitude, distribution, and clinical relevance of facial soft tissue changes associated with MARPE.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
his single-center prospective controlled observational study will investigate facial soft tissue changes associated with miniscrew-assisted rapid palatal expansion (MARPE) in postpubertal individuals.
Three-dimensional facial images will be obtained using the MetiSmile facial scanning system (Shining 3D, Hangzhou, China) under standardized conditions, including natural head position, neutral facial expression, and relaxed lips.
The MARPE group will be evaluated at three time points: before appliance activation (T0), following completion of active expansion (T1), and after a three-month retention period (T2). The control group will undergo facial scanning at baseline and at a follow-up interval corresponding to the T0-T2 observation period.
Regional soft tissue changes will be assessed in the nasal, alar base, paranasal, nasolabial, midfacial, and upper lip regions. Clinical perceptibility will be investigated through blinded orthodontic specialist assessments of standardized facial image pairs. Patient-reported perception of facial changes will also be recorded using structured questionnaires.
Where routine clinical CBCT records are available, skeletal expansion and intermolar width changes will be measured and their relationships with regional facial soft tissue changes will be investigated. No additional radiographic examinations will be performed solely for research purposes.
Comparisons between the MARPE and control groups will be used to distinguish expansion-associated facial changes from changes occurring during the observation period.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Hasan Kılınç, research assistant
- Numéro de téléphone: +90 416 219 72 80
- E-mail: hkilinc@adiyaman.edu.tr
Lieux d'étude
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Adıyaman Province
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Adıyaman, Adıyaman Province, Turquie (Türkiye), 02040
- Adiyaman University Faculty of Dentistry, Department of Orthodontics
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Contact:
- Hasan Kılınç, research assistant
- Numéro de téléphone: +90 416 219 72 80
- E-mail: hkilinc@adiyaman.edu.tr
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
The study population will consist of 60 postpubertal orthodontic patients aged 16-25 years recruited from the Department of Orthodontics, Faculty of Dentistry, Adiyaman University, Türkiye. The MARPE group will include 40 patients undergoing clinically indicated maxillary expansion, while the control group will consist of 20 age- and skeletal maturation-matched orthodontic patients who will not receive maxillary expansion during the observation period. All participants will be prospectively followed using three-dimensional facial scans. Treatment decisions will be made independently of study participation.
La description
Inclusion Criteria:
- Individuals aged 16-25 years.
- Postpubertal skeletal maturation confirmed by cervical vertebral maturation (CVM) assessment using existing lateral cephalometric radiographs.
- Patients with a clinical indication for miniscrew-assisted rapid palatal expansion (MARPE), determined independently of the study (MARPE group).
- Orthodontic patients matched for age and skeletal maturation who will not undergo maxillary expansion during the observation period (control group).
- Willingness to participate and provision of informed consent (and parental/legal guardian consent for participants under 18 years).
Exclusion Criteria:
- History of previous maxillary expansion treatment.
- Previous or planned orthognathic surgery during the observation period.
- Facial aesthetic procedures or surgical interventions that may influence soft tissue morphology during follow-up.
- Systemic diseases or craniofacial conditions affecting bone or soft tissue development.
- Maxillary expansion performed in control participants during the observation period.
- Inability to complete the required facial scans or follow-up assessments.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: COHORT
- Perspectives temporelles: PROSPECTIVE
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
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MARPE Group
Participants aged 16-25 years with a clinical indication for miniscrew-assisted rapid palatal expansion (MARPE). A total of 40 participants will undergo routine MARPE treatment independently of the study. Three-dimensional facial scans will be obtained before expansion (T0), immediately after active expansion (T1), and at the third month of retention (T2). |
MARPE is performed as part of routine orthodontic treatment based on an independent clinical indication. The study does not assign or modify the treatment. Three-dimensional facial scans are obtained before expansion (T0), immediately after active expansion (T1), and at the third month of retention (T2) to evaluate facial soft tissue changes. |
|
Control Group
Twenty age- and skeletal maturation-matched orthodontic patients who will not undergo maxillary expansion during the observation period. Routine orthodontic treatment may continue. Three-dimensional facial scans will be obtained at two time points corresponding to the baseline and three-month retention follow-up interval of the MARPE group. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Three-Dimensional Facial Soft Tissue Changes Following MARPE
Délai: Baseline (T0), immediately after active expansion (T1), and 3 months after active expansion (T2). Control participants will be assessed at two corresponding time points.
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Three-dimensional facial soft tissue changes will be evaluated using MetiSmile facial scans. Regional changes in the nasal, paranasal, midfacial, zygomatic, and upper lip areas will be quantified in millimeters (mm) by comparing baseline and follow-up scans. Changes from T0 to T2 will be compared between the MARPE and control groups. Additional changes between T0-T1 and T1-T2 will be assessed in the MARPE group. |
Baseline (T0), immediately after active expansion (T1), and 3 months after active expansion (T2). Control participants will be assessed at two corresponding time points.
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Expert Assessment of Perceived Facial Changes
Délai: Baseline (T0) to 3 months after active expansion (T2).
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Blinded orthodontic experts will evaluate paired three-dimensional facial images to assess the perceptibility and magnitude of facial changes. Assessments will include identification of the later time point, confidence level (0-10), perceived change severity (0-4), and facial regions showing the most noticeable changes. |
Baseline (T0) to 3 months after active expansion (T2).
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Autres mesures de résultats
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Patient-Reported Perception of Facial Changes
Délai: 3 months after active expansion (T2).
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Participants will complete a self-assessment questionnaire to evaluate their perceived facial changes following MARPE treatment. Patient-reported perceptions will be assessed and compared with objectively measured three-dimensional facial soft tissue changes. |
3 months after active expansion (T2).
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Nihal HAMAMCI, Professor Doctor, Adiyaman University
- Directeur d'études: Hasan Kılınç, research assistant, Adiyaman University
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Autres numéros d'identification d'étude
- ADIYAMAN-MARPE-2026-01
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
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