HABIT 50+: Habitual toothbrushing behavior and intraoral scan–based plaque tracking in individuals aged 50 to 70

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00040050

Enrollment

Registered

2026-07-16

Start date

2026-06-26

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Healthy volunteers aged 50 to 70

Interventions

Group 1: Video-based behavioural analysis: Assessment of habitual toothbrushing behaviour, including brushing duration, systematicity, and brushing movements. Group 2: Intraoral scan-based plaque anal

Eligibility

Sex/Gender

All

Age

50 Years to No maximum

Inclusion criteria

Inclusion criteria: 1) Age 50–70 years (inclusive) 2)Informed consent and willingness to participate in the study 3) A maximum of one missing tooth per jaw (excluding third molars) that has not been replaced

Exclusion criteria

Exclusion criteria: 1)Severe systemic or acute diseases (ASA > II) 2) Significant cognitive, motor, or neurological disorders (CFS > 3) Allergies or intolerances to the materials used in the study 4) Acute painful oral conditions

Design outcomes

Primary

Measure	Time frame
Video-based parameters of habitual oral hygiene behaviour: total toothbrushing duration in seconds, regional brushing-time proportions, toothbrushing systematicity quantified using the Toothbrushing Systematics Index (TSI), and the type and temporal proportion of brushing movements classified as circular, horizontal, vertical, or non-specific. These parameters will be determined by analysing the video recordings obtained during habitual toothbrushing. Additional sequence-derived parameters will be analysed exploratorily. Intraoral scan-based plaque measures: planimetrically determined percentage plaque coverage before toothbrushing (P% pre) and after toothbrushing (P%post), as well as the resulting absolute plaque reduction in percentage points, defined as: ?Plaque=P%pre-P%post. These outcomes will be determined from the intraoral scans obtained before and after toothbrushing.	—

Measure

Time frame

Video-based parameters of habitual oral hygiene behaviour: total toothbrushing duration in seconds, regional brushing-time proportions, toothbrushing systematicity quantified using the Toothbrushing Systematics Index (TSI), and the type and temporal proportion of brushing movements classified as circular, horizontal, vertical, or non-specific. These parameters will be determined by analysing the video recordings obtained during habitual toothbrushing. Additional sequence-derived parameters will be analysed exploratorily. Intraoral scan-based plaque measures: planimetrically determined percentage plaque coverage before toothbrushing (P% pre) and after toothbrushing (P%post), as well as the resulting absolute plaque reduction in percentage points, defined as: ?Plaque=P%pre-P%post. These outcomes will be determined from the intraoral scans obtained before and after toothbrushing.

—

Secondary

Measure	Time frame
regional stratification of plaque coverage before and after toothbrushing and of plaque reduction according to vestibular and oral tooth surfaces and sextants. In addition, the video-based behavioural parameters will be assigned to the corresponding tooth regions in order to exploratorily investigate region-specific associations between toothbrushing behaviour, residual plaque coverage, and plaque reduction.	—

Measure

Time frame

regional stratification of plaque coverage before and after toothbrushing and of plaque reduction according to vestibular and oral tooth surfaces and sextants. In addition, the video-based behavioural parameters will be assigned to the corresponding tooth regions in order to exploratorily investigate region-specific associations between toothbrushing behaviour, residual plaque coverage, and plaque reduction.

—

Countries

Germany

Contacts

Public ContactKatja Jung

Klinik für Zahnerhaltung - Sektion Kariologie

katja.jung@uni-marburg.de+49 6421 58 62859

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 10, 2026