Bite Force and Occlusal Force Distribution Following Root Canal Treatment.
ConditionEndodontically Treated Teeth
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age20-60
SponsorChulalongkorn University
About this trial
Understanding the changes in bite force and occlusal force distribution in ETT is clinically important, as it can directly influence tooth prognosis, guide restorative treatment planning, and impact the long-term survival of the treated tooth. Therefore, this study aims to further explore changes and possible correlation in maximum bite force (MBF), occlusal force distribution and patients' subjective perception of chewing function of endodontically treated teeth after non-surgical root canal treatment, subsequent restoration, and during long-term follow-up, along with comparing to contralateral vital teeth.
Methods: Patients aged 20-60 years who underwent non-surgical root canal treatment at the Graduate Endodontic Clinic, Faculty of Dentistry, Chulalongkorn University, with the following teeth indicated for endodontic treatment. Measurements of maximum bite force (MBF) of ETT and contralateral vital teeth, relative occlusal force (ROF), and questionnaire responses, are performed at the following time points: before NS-RCT, 1 month after completion of NS-RCT (before doing restoration), 3 months after crown restoration, 1, 2 and 4 years after completion of NS-RCT.
Differences in MBF and ROF over time points within subjects and differences in MBF and ROF between ETT and their contralateral vital teeth were statistically analyzed.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Premolars or molars diagnosed with pulp necrosis or previously initiate therapy with normal apical tissues, asymptomatic apical periodontitis, or chronic apical abscess without full coverage restoration.
Adequate remaining tooth structure for cuspal coverage restoration.
Presence of adjacent teeth and functional opposing natural teeth.
No analgesics drug effect at the time of investigation or not have taken analgesics 6 hours ago.
Disqualifiers
Patients undergoing other dental treatments during the study period that may interfere with occlusion or bite force distribution, such as orthodontic treatment, jaw surgery, or full mouth restoration.
Received treatments that cause weakness of the jaw and facial muscles, such as botox injections.
History or symptoms of temporomandibular disorders (TMD)
Periodontal disease with second- or third-degree mobility
Trial population
Patients who underwent non-surgical root canal treatment at the Graduate Endodontic Clinic, Faculty of Dentistry, Chulalongkorn University
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Not listed
Trial groups
70 Participants
are grouped into 1 trial groupGroup A: Endodontic patient
Trial outcomes
Primary outcomes
1
Maximum bite force
Maximum bite force of the endodontically treated tooth and its contralateral tooth in each patient will be measured using the FlexiForce ELF System and FlexiForce B201 sensor.
Time frame
before NS-RCT, 1 month after completion of NS-RCT (before doing restoration), 3 months after crown restoration, 1, 2 and 4 years after completion of NS-RCT.2
Relative occlusal force
Relative Occlusal Force are measured with the T-Scan III system. A device will be inserted into the mouth of the patients, and they are instructed to bite firmly three times at the maximum cusp intersection position.
Time frame
before NS-RCT, 1 month after completion of NS-RCT (before doing restoration), 3 months after crown restoration, 1, 2 and 4 years after completion of NS-RCT.Secondary outcomes
1
Patients' subjective perception of chewing function
A questionnaire will be used to assess patients' subjective perceptions of chewing function, including preferred chewing side, frequency of hard food consumption, and parafunctional habits such as bruxism and clenching.
Time frame
before NS-RCT, 1 month after completion of NS-RCT (before doing restoration), 3 months after crown restoration, 1, 2 and 4 years after completion of NS-RCT.Sponsors and contacts
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Source ClinicalTrials.gov
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