Randomized controlled study to assess performance of two ClearCorrect Clear Aligner staging schedules using digital PAR scores

Randomized controlled study to assess performance of two ClearCorrect Clear Aligner staging schedules using digital PAR scores - ClearQuartz Study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00027995

Enrollment

Registered

2022-02-11

Start date

2022-02-21

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K07.4

Interventions

Group 1: Clear Aligner treatment with aligner change every week Group 2: Clear Aligner treatment with aligner change every second week

Eligibility

Sex/Gender

All

Age

12 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients 12 years of age or older who are in need of correction of malocclusion and meet all of the inclusion but none of the exclusion criteria listed below. Inclusion Criteria: Patients or legal guardian must have voluntarily signed the Informed Consent Form before any study related procedures are performed, are willing and able to attend scheduled follow-up visits and agree that the pseudonymized data will be collected, analysed, and published. Patients who are a minimum of 12 years of age, and who are looking for an orthodontic treatment.

Exclusion criteria

Exclusion criteria: Patients with inadequate oral hygiene, Patients with allergies or hypersensitivity to co-polyester or polyurethane, Active periodontitis, Severe systemic / metabolic disease, Intake of drugs interfering with bone metabolism, Nicotine intake (= 10 cigarettes / day), Alcohol or drug abuse , TMJ disorders, Caries has to be restored before treatment start, Sleeping disorders that do not allow for usage of aligners at night, Patients with conditions or circumstances, in the opinion of the investigator, which would prevent completion of study participation or interfere with analysis of study results, such as history of non-compliance or unreliability, Pregnancy, Patients with dental implants, Patients that have the second molars not yet erupted.

Design outcomes

Primary

Measure	Time frame
6 months digital PAR score, or if shorter treatment at the end of treatment	—

Secondary

Measure	Time frame
Oral health, PAR score at end of treatment, Patient reported outcome measures, such as speech impairment, comfort.	—

Countries

Germany

Contacts

Public ContactKathrin Becker

Poliklinik für Kieferorthopädie

Kathrin.Becker@med.uni-duesseldorf.de+492118116382

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026