Comparison of the effects of chlorhexidine, Persica and Protact mouthwash on gingival healing after crown lengthening surgery: a double-blinded randomized clinical trial

Determining the effect of chlorhexidine, Persica and Protact mouthwashes on gingival healing after crown lengthening surgery

A randomized clinical trial in the form of a randomized block with a control group, with parallel groups, double-blind on 33 patients. Choosing the type of group for each person through random allocation software 2

The study will be conducted on patients referred to Sari Dental Faculty who are candidates for tooth crown lengthening surgery. The study is double-blind and to blind the patients and the surgeon (researcher), the mouthwashes will be placed in the same dark bottles with different labels. Patients will use mouthwash for 2 weeks from the night of surgery, and then the variables will be checked and recorded.

Inclusion criteria: Patients between 18 and 60 years old with indication of crown lengthening surgery Exclusion criteria: systemic disease, smokers, pregnant and breastfeeding women, being allergic to mouthwashes, using antibiotics in the last 3 months for 10 consecutive days, using drugs that interfere with gum healing and corticosteroids,

Patients will be divided into three groups. Each group will be given one of chlorhexidine 0.2%, Persica and Protact mouthwashes. the patients will be asked to use mouthwashes for two weeks from the night of surgery according to the manufacturer's recommendations, and avoid washing their mouths, eating and drinking for half an hour after using the mouthwash. After surgery, all patients will be prescribed ibuprofen 400mg.

mouthwash taste through questionnaire and gingival index; Plaque index; Stain index and tongue color change are checked and recorded by the periodontist

Random block method will be used to assign samples to groups (type of mouthwash). First, the samples will be matched in terms of age, gender, periodontium condition and oral hygiene and people with similar status will be placed in a block. According to the total number of required samples (33 samples) and the number of mouthwashes, finally 11 blocks with matched samples will be considered as 3 samples in each block (number of mouthwashes). Selection of blocks and type of mouthwash for each sample will be done through random allocation software 2 and the samples will be placed in one of the groups by this software.

The study is double-blind. In order to blind patients, therapists and researchers, mouthwashes are placed in dark-colored bottles with the same appearance with different labels and are prescribed along with painkillers. According to the recommendations of the manufacturers, the mouthwash instructions leaflet is given to the patients in identical envelopes with different labels according to the mouthwash label, and the patients are asked to use the relevant mouthwash according to the leaflet.

After the completion of the project, the results will be delivered in the form of a final report and in electronic form (on a CD) to the Vice-Chancellor of Research and Faculty of Dentistry of Mazandaran University of Medical Sciences.

The decision regarding access to the data will be the responsibility of the vice president of research and the Faculty of Dentistry of Mazandaran University of Medical Sciences, as well as the supervisor.

Vice President of Research, Faculty of Dentistry, Mazandaran University of Medical Sciences and also a supervisor

The request should be sent to the responsible person after consultation with the research team, the data will be provided to the requesting person, and it is necessary to give reference to the data owners in the articles or wherever the data is to be used, and the use of the results only It is allowed by citing its source.

Vice President of Research, Faculty of Dentistry, Mazandaran University of Medical Sciences and also a supervisor

A written request to the vice president of research or the Faculty of Dentistry of Mazandaran University of Medical Sciences and also obtaining the consent of the supervisor.