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Completed

NCT Number: NCT04615780

Green Tea Mouthwash on the Oral Health Status in Oral Cancer Patients

Objectives: To evaluate the effectiveness of green tea mouthwash on the oral health status (OHS) in oral cancer patients undergoing anticancer treatment.

Materials and methods: This was a prospective, single-blind, randomized, controlled trial. Patients were randomly assigned to 2 groups: mouthwash with green tea (intervention) group or tap water (control) group. The intervention group rinsed the mouth with 100 ml green tea solution for 60 seconds at least twice daily, and the control group rinsed the mouth with 100 ml tap water for 60 seconds at least twice daily. The primary outcome was OHS, which was evaluated according to the Oral Assessment Guide and measured at seven time points by the same researcher. Time 0 (T0) corresponded to baseline, and Time 1-6 (T1-T6) corresponded to monthly outpatient follow-ups until six months.

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Key information

Conditions

Oral Cancer Head and Neck Neoplasms Mouth Diseases Mouth Neoplasms Neoplasms Neoplasms by Site Stomatognathic Diseases

Age range

20 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Ditmanson Medical Foundation Chia-Yi Christian Hospital

Chiayi City, 60002, Taiwan

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • patients who were > 20 years
  • newly diagnosed with oral cancer by a physician
  • just received oral surgery and follow-up with or without chemotherapy or radiation therapy.

Exclusion criteria

  • patients with mental illness
  • an acute and a severe illness status
  • no teeth in the whole mouth
  • the ability of mouth opening less than 1 cm.

Treatment and study plan

mouthwash with green tea

Other

All patients received instructions for using the Bass brushing method to brush their teeth with a soft small-headed toothbrush. The intervention group rinsed the mouth with 100 ml green tea solution for 60 seconds at least twice daily. For the preparation of the green tea mouthwash, green tea solution was made with 5 g (1 teaspoon) of green tea powder dissolved in 100 ml water to produce 5% green tea mouthwash, as described in a previous study (Eshghpour, et al., 2013). The green tea powder was ground from Camelia sinensis leaves and regularly provided by the researcher. The green tea solution is made for a single use and remade before rinsing each time. When patients return to the outpatient monthly, the researcher first confirms patients' compliance, then assists with solving difficulties and gives encouragement.

mouthwash with tap water group

Other

All patients received instructions for using the Bass brushing method to brush their teeth with a soft small-headed toothbrush. The control group rinsed the mouth with 100 ml tap water for 60 seconds at least twice daily.

Primary outcomes

  1. oral health status (OHS)

    Time frame: Time 0 (T0) corresponded to baseline

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  2. oral health status (OHS)

    Time frame: Time 1(T1) corresponded to the 1 month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  3. oral health status (OHS)

    Time frame: Time 2(T2) corresponded to the 2nd month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  4. oral health status (OHS)

    Time frame: Time 3(T3) corresponded to the 3th month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  5. oral health status (OHS)

    Time frame: Time 4(T4) corresponded to the 4th month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  6. oral health status (OHS)

    Time frame: Time 5(T5) corresponded to the 5th month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

  7. oral health status (OHS)

    Time frame: Time 6(T6) corresponded to the 6th month after recruitment.

    Patients' oral health status (OHS) was assessed according to the Oral Assessment Guide (OAG) by the same researcher. The OAG consists of eight items: voice, swallow, lips, tongue, saliva, mucous membranes, gingiva and teeth or dentures. Each item is rated by a grading of 1 (normal) to 3 (severe). Sum scores between 8-24 points and a higher score indicate poorer OHS.

Sponsors and collaborators

Lead sponsor

Chiayi Christian Hospital

Other

Registry information

Official study title

Effectiveness of Green Tea Mouthwash on the Oral Health Status in Oral Cancer Patients: A Single-blind Randomized Clinical Trial and a CONSORT-compliant Article

Important dates

Study start
2018
Primary completion
2020
Study completion
2020
First posted
Nov 4, 2020
Registry last updated
Nov 4, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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