Clinical Trials Logo

Clinical Trial Summary

A parallel-group randomized clinical trial was conducted with 45 patients of the Orthodontic Clinic of Universidad Iberoamericana's (UNIBE) Postgraduate Unit. The study hypothesis was that motivational interview plus oral hygiene instructions would be more effective in maintaining long-term oral hygiene in comparison with conventional oral hygiene instructions alone. A computer-generated list of numbers created with Statistical Package for the Social Sciences (SPSS) V21.0 was used to random allocate participants into the experimental or the control group. Monthly oral hygiene instructions and a G.U.M. kit were given to the sample. Additionally, the experimental group received motivational interviewing sessions by a trained periodontist. Simplified Oral Hygiene Index, Gingival Index, Periodontal Probing Depth and Bleeding on Probing were recorded at baseline, three and six months after the beginning of the study. Repeated-measures analysis of variance and chi-squared test were conducted.


Clinical Trial Description

Sample calculation A power analysis was carried out to determine the number of subjects needed to achieve a Simplified Oral Hygiene Index (SOHI) significant interaction with the study groups when applying repeated measures ANOVA. The total number of completed subjects needed to achieve power of 0.90 with an alpha (α) of 0.05, an effect size (f) of at least .25 was determined to be 36; taking into consideration a possible 10% attrition rate, 45 subjects were recruited, consented and randomized to either the experimental or control group. Due to the matter that repeated measures ANOVA treats each measurement as a separate variable, and it's preferable to use listwise deletion, if one measurement is missing, the whole case gets dropped. For this reason and therefore the incontrovertible fact that the trial suffers attrition, the sample for the three measurements was reduced to 32 subjects. Randomization A simple randomization procedure was executed by the principal investigator to allocate the participants into one of the study groups. A computer-generated list of numbers was created using the software SPSS V21.0, with a 1:1.25 allocation ratio. Two dentists enrolled and allocated the participants according to the order of arrival and following the list of random numbers. A coding system was used as a concealment mechanism, which consisted of colored labels attached to the participants' file. Thus, the participant and the evaluator (the periodontist who recorded the data) were masked. Study intervention An interviewer was in charge of providing oral hygiene instructions for both groups. All the participants received a G.U.M. kit with special orthodontic hygiene tools. Then, the patients of the experimental group received a motivational interviewing session. Afterward, the clinical parameters were measured by another periodontist. Monthly follow-up appointments were scheduled for the orthodontic check-ups to deliver a new G.U.M. kit, to reinforce the OHI and MI, and to register the periodontal parameters. The important data for this research was the one recorded at baseline, three and six months after the intervention. Statistical analysis Mean Simplify oral hygiene index (SOHI), gingival index (GI), periodontal probing depth (PPD), and bleeding on probing (BoP) scores were compared between groups across three-time points using repeated-measures mixed-model analysis of variance. Tests for equality of variances and sphericity to check for homoscedasticity were performed due to the problem of sample attrition. Nevertheless, it was not found any violation to these assumptions in any of the variables included in the analysis. SPSS software was used for all calculations (IBM SPSS 25th version). Due to the nominal level of measurement of the variable BoP, it was performed a chi-squared test for each three time points to check if there were any differences between the two experimental conditions. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04871373
Study type Interventional
Source Universidad Iberoamericana
Contact
Status Completed
Phase N/A
Start date June 16, 2017
Completion date November 12, 2018

See also
  Status Clinical Trial Phase
Recruiting NCT05825742 - Regular Home Use of Dual-light Photodynamic Therapy on Oral Health in Adolescents Undergoing Fixed Orthodontic Treatment N/A
Active, not recruiting NCT03696511 - Miniscrews Primary Stability N/A
Completed NCT05710874 - A Prospective, Randomized, Clinical Study on the Effects of CPP-ACP-paste, Fluoride and a Combination on the Evolution of White Spot Lesions in Orthodontic Patients After Debonding. N/A
Completed NCT05818527 - Effectiveness of Low Frequency Vibration on the Rate of Canine Retraction N/A
Completed NCT03004196 - Comparison of Efficacy Of Probiotic Toothpaste and Chlorhexidine Mouthwash To Reduce S.Mutans Phase 1/Phase 2
Completed NCT03400111 - The Role of Paracetamol-caffeine and Laser Irradiation on Controlling Pain and Discomfort During Orthodontic Treatment N/A
Completed NCT06403033 - Mini-implant-supported Twin-Block in Treating Patients With Class II Division 1 Malocclusion N/A
Active, not recruiting NCT05026411 - Food Reward Circuit Change by Orthodontics N/A
Terminated NCT04604262 - Does Use of the Waterpik Maintain Cleaner Teeth in Patients With Fixed Braces N/A
Completed NCT02427763 - Microbiological and Epithelial Evaluation Related to the Use of Orthodontic Thermoplastic Device Phase 0
Recruiting NCT05005689 - Fluoride Delivery to Prevent White Spots During Orthodontic Treatment Phase 4
Recruiting NCT04606186 - Influence of Probiotics on Clinical Parameters, the Oral Microbiome and the Immune System During an Orthodontic Treatment in Adult Patients N/A
Completed NCT05499923 - Quantitative Measurement of ARI N/A
Completed NCT04037709 - Photodynamic Therapy in Patients With Gingivitis N/A
Recruiting NCT04598633 - Influence of Probiotics on Clinical Parameters, the Oral Microbiome and the Immune System During an Orthodontic Treatment N/A
Not yet recruiting NCT03653078 - Root Proximity During Mini-Screw Insertion Using a Digital Three-Dimensional Printed Guide N/A
Recruiting NCT05644119 - Periodontal and Orthodontic Outcomes of Straight vs. Looped Fixed Retainers N/A
Completed NCT05831722 - Changes in the Upper Airway Volume After Rapid Maxillary Expansion in Adults Using Pure Skeletal Anchorage
Not yet recruiting NCT04131855 - The Omission of Pumice Prophylaxis on Bracket Failure Rates Using Self Etch Primers N/A
Completed NCT03476161 - Bond Failure of Two Types of Molar Buccal Tubes N/A