Effect of Clear Aligner Wear Protocol on the Efficacy of Tooth Movement : A Randomized Clinical Trial

Al-Nadawi , Mays; Kravitz , Neal D.; Hansa , Ismaeel; Makki , Laith; Ferguson , Donald J.; Vaid , Nikhilesh R.

doi:10.12816/0059361

Article Details

Effect of Clear Aligner Wear Protocol on the Efficacy of Tooth Movement : A Randomized Clinical Trial

Authors:

Al-Nadawi , Mays | Kravitz , Neal D. | Hansa , Ismaeel | Makki , Laith | Ferguson , Donald J. | Vaid , Nikhilesh R.

Publisher:

Dental News

Main Topics:

Medicine

Journal:

Dental News 2021 Vol.28 Issue 2, pp.58-67

Document Type:

Article

Publication Date:

6/2021

Document Language:

English

Document ID (Org No.):

240527

Frequency:

Quarterly

pISSN:

1026261X

DOI:

10.12816/0059361

Descriptors:

Keywords:

Abstract:

 Objectives: To compare the efficacy of orthodontic tooth movement with three aligner wear protocols: 7 day, 10 day, and 14 day.
Materials and Methods: Eighty patients were randomly allocated into three groups: group A (7-day changes), group B (10-day changes), and group C (14-day changes). Theposttreatment scans were compared with the final virtual treatment simulations through digital superimposition. The differences between predicted and actual achievedtreatment outcomes were computed in six angular and six linear dimensions. Differences .0.5 mm for linear measurements and .28 for angular measurements were consideredclinically relevant.
Results: Within groups, and irrespective of wear protocol, all linear discrepancies in both jaws were deemed clinically insignificant (,0.5 mm) while nearly all angular discrepancies were considered clinically significant (.2.08). When the three groups were compared,group C (14-day changes) showed significantly greater accuracy in the posterior segment for maxillary intrusion, distal-crown tip and buccal-crown torque, and mandibular intrusion and extrusion. The mean treatment duration in the 7-day aligner change group was nearly half that of the 14-day aligner change group (5 months vs 9 months).
Conclusions: Fourteen-day changes were statistically significantly more accuratein some posterior movements. However, this difference in accuracy did not exceed the threshold for clinical significance (.0.5 mm/.2.08). Achieving a clinically similar accuracy between the 7-day protocol and 14-day protocol in half the treatment timesuggests a 7-day protocol as an acceptable treatment protocol. Clinicians may consider slowing down to a 14-day protocol if challenging posterior movements are desired. (Angle Orthod. 2021;91:157–163.)

Article Details

Effect of Clear Aligner Wear Protocol on the Efficacy of Tooth Movement : A Randomized Clinical Trial

Authors:

Al-Nadawi , Mays | Kravitz , Neal D. | Hansa , Ismaeel | Makki , Laith | Ferguson , Donald J. | Vaid , Nikhilesh R.

Publisher:

Dental News

Main Topics:

Medicine

Journal:

Dental News 2021 Vol.28 Issue 2, pp.58-67

Document Type:

Article

Publication Date:

6/2021

Document Language:

English

Document ID (Org No.):

240527

Frequency:

Quarterly

pISSN:

1026261X

DOI:

10.12816/0059361

Descriptors:

DENTISTRY

ORTHODONTICS

TOOTH CARE

PATIENTS

Invisalign

Wear Protocol

Aligner Efficacy

Clear Aligner Therapy

Issues

Article Details

Authors: Al-Nadawi , Mays | Kravitz , Neal D. | Hansa , Ismaeel | Makki , Laith | Ferguson , Donald J. | Vaid , Nikhilesh R.

Publisher: Dental News

Main Topics: Medicine

Journal: Dental News 2021 Vol.28 Issue 2, pp.58-67

Document Type: Article

Publication Date: 6/2021

Document Language: English

Document ID (Org No.): 240527

Frequency: Quarterly

pISSN: 1026261X

DOI: 10.12816/0059361

Descriptors:

Issues

Authors:

Al-Nadawi , Mays | Kravitz , Neal D. | Hansa , Ismaeel | Makki , Laith | Ferguson , Donald J. | Vaid , Nikhilesh R.

Publisher:

Dental News

Main Topics:

Medicine

Journal:

Dental News 2021 Vol.28 Issue 2, pp.58-67

Document Type:

Article

Publication Date:

6/2021

Document Language:

English

Document ID (Org No.):

240527

Frequency:

Quarterly

pISSN:

1026261X

DOI:

10.12816/0059361