Skip to content

Toothbrush Wear and Its Effect on Subgingival Inflammation Using Two Different Brushing Techniques

A Tooth Brushing Technique That Reduces Gingival Inflammation and Toothbrush Deformation

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03158350
Enrollment
48
Registered
2017-05-18
Start date
2015-08-03
Completion date
2016-03-31
Last updated
2019-03-12

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

Conditions

Gingival Inflammation

Brief summary

Toothbrush plaque removal, along with interproximal flossing, helps to maintain the oral cavity free from periodontal diseases and dental caries. Although techniques such as the Bass Technique (BT), the Modified Bass Technique (MBT) and the Modified Stillman Technique (MST) are taught to dental students, dental hygiene students, and dental assistants, there is little evidence to discern which technique is more effective in reducing or preventing gingival inflammation. At Tufts University School of Dental Medicine (TUSDM), a modification of the Bass intrasulcular technique is advocated to many students. We call this modification of the Bass technique a Stationary Bristle Technique (SBT), which is an intrasulcular technique that maintains the toothbrush bristle ends essentially stationary on the tooth cervically and in the gingival crevice. In this study, half of the participants were taught the Stationary Bristle Technique Group, while the other half were not be provided with instructions, but asked to brush as normal (non-interventional group) throughout the duration of the study.

Detailed description

This is a double-armed, randomized clinical trial. The primary aim of this study is to compare whether a Stationary Brushing Technique (SBT) is more effective in the reduction of gingival inflammation than permitting people to brush the way they normally do without instruction (Non-Stationary Brushing Technique). Gingival inflammation is evidenced by the percentage (%) sites with Bleeding on Probing (BoP). The primary time-point will be at 4 weeks. The amount of toothbrush bristle deformation at 4 weeks, 12, and 16 weeks of brushing with a SBT and with a NSBT will also be evaluated. 3. The secondary evaluation of BoP will be at the 12 and 16 week time-point.

Interventions

OTHERInstructed Brushing Method

Stationary Bristle Technique

Sponsors

Tufts University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Subjects must be at least 18 years of age * Subjects must have at least 20 teeth * Subjects must have had a professional dental prophylaxis done in the 3 months prior to the beginning of the study * Subjects exhibiting 10% or greater BoP at the baseline examination

Exclusion criteria

* Subjects wearing fixed orthodontic appliances (including lingual retainers or Invisalign®) * Subjects who smoke (=more than 0 cigarettes a day) * Subjects who received antibiotic treatment during the month prior to the beginning of the study * Subjects who have cervical probing depth (PD) greater than 3mm * Subjects diagnosed with periodontal disease at any site as defined bleeding on probing with cervical probing depths greater than 3 mm and loss of cervical attachment. * Subjects who are currently pregnant (self-report).

Design outcomes

Primary

MeasureTime frameDescription
Change in Gingival InflammationFrom Baseline up to 4 weeksMeasured by the percentage of sites with BoP. The percentage of sites with BoP at each time point will be calculated by group

Secondary

MeasureTime frameDescription
Toothbrush Bristle DeformationFrom baseling up to 16 weeksToothbrush bristle deformation will be measured at 4 weeks, 12 weeks, and 16 weeks of brushing with SBT or NSBT. The mean and standard deviation of the deformation measurements (length and width) will be calculated at each time point for each group.
Change in BoPFrom baseline up to 16 weeksThe secondary evaluation of BoP will be at the 12 and 16 week time-point.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026