UMIN-CTR Clinical Trial

Basic information
Public title	The study to confirm the effect of a food containing lactic acid bacteria on oral health : A randomized, double-blind, placebo controlled trial.
Acronym	Effect of a food containing lactic acid bacteria on oral health.
Scientific Title	The study to confirm the effect of a food containing lactic acid bacteria on oral health : A randomized, double-blind, placebo controlled trial.
Scientific Title:Acronym	Effect of a food containing lactic acid bacteria on oral health.
Region	Japan

Condition
Condition	None (Healthy adults)
Classification by specialty	Adult
Classification by malignancy	Others
Genomic information	NO

Objectives
Narrative objectives1	The objective of this study is to confirm the efficacy of the continuous intake of a food containing lactic acid bacteria on oral health.
Basic objectives2	Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase

Assessment
Primary outcomes	Gingival index Plaque index
Key secondary outcomes	Symptom of gingivitis on anterior teeth Periodontal index Saliva test: anti-microbial peptide (beta-defensin 1), hemoglobin content, LD (LDH) content, saliva secretion, pH, immune index (IgA, IL1, IL6, IL8, TNF-alpha) Periodontal bacteria number (P. gingivalis, P. intermedia, T. forsythensis, F. nucleatum ) Caries-related bacteria number (total Streptococcus, S. mutans ) VSC concentration (hydrogen sulfide, methyl mercaptan, dimethyl sulfide) Special blood test: immune index (IgA, IL1, IL6, IL8, TNF-alpha)

Base
Study type	Interventional

Study design
Basic design	Parallel
Randomization	Randomized
Randomization unit	Individual
Blinding	Double blind -all involved are blinded
Control	Placebo
Stratification	YES
Dynamic allocation	NO
Institution consideration	Institution is not considered as adjustment factor.
Blocking	NO
Concealment	No need to know

Intervention
No. of arms	2
Purpose of intervention	Prevention
Type of intervention	Food
Interventions/Control_1	Ingest the yogurt drink containing lactic acid bacteria LH strain every day for 12 weeks.
Interventions/Control_2	Ingest the yogurt drink without lactic acid bacteria LH strain every day for 12 weeks.
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

Eligibility
Age-lower limit	20 years-old <=
Age-upper limit	65 years-old >=
Gender	Male and Female
Key inclusion criteria	(1) Subjects aged between 20 to 65 years old. (2) Subjects who generally take three meals a day. (3) Subject who have more than four teeth possible to examine out of the lavial-buccal side of the six teeth including maxillary right first molar (FDI tooth number 16), maxillary right lateral incisor (12), maxillary left central incisor (21), maxillary left first premolar (24), mandibular left lateral incisor (32), mandibular left first molar (36), mandibular right central incisor (41), and mandibular right first premolar (44). Instead of the subjects as mentioned above, subjects having FDI number 17, 15, 11, 22, 25, 37, 35, 31, 42, and 45 are also applicable. (4) Subjects who have gingivitis or at least one periodontal pocket more than 4 mm depth. (5) Subjects who are not receiving treatment for caries and periodontal disease, and have at least 20 teeth new. (6) Subjects periodontal disease-associated bacteria were detected by the screening test. (7) Subject who can avoid taking foods containing lactic acid bacteria, those displaying oral health related indication such as a xylitol chewing gum, and supplements. (8) Subjects who received a sufficient explanation of the purpose and contents of this examination, have the capacity to consent, applied with free will with sufficient understanding, and agreed to participate with a written document.
Key exclusion criteria	(1) Subject who are diagnosed with caries (C3<=) or severe periodontal disease. (2) Subject who have illness such as diabetes, chronic kidney disease, gastrointestinal disease, lung disease, malignant tumor and so on, and are taking medicine. (3) Persons who are participating or intend to participate in other tests for taking foods, drugs, and/or cosmetics. (4) Subject whose saliva secretion by stimulation during 5 minute is less than 3.0 mL. (5) Subjects whose pH of saliva is <= 6.2. (6) Subjects who are wearing removal dentures. (7) Subjects who are taking antibiotics and/or anti-microbe agents, or who had taken them within one month prior to the screening test. (8) Subjects who have food allergy, lactose intolerance, and/or feeling of unwellness by the dairy products. (9) Subjects who are pregnant, or who are planning to become pregnant or breast-feeding during the test. (10) Subjects who are judged as unsuitable for the study by the investigator for other reasons.
Target sample size	100

Research contact person
Name of lead principal investigator	1st name Middle name Last name Nobuhiro Hanada
Organization	Tsurumi university, School of Dental Medicine
Division name	Department of translational research
Zip code
Address	2-1-3 Tsurumi,Tsurumi-ku, Yokohama-shi, 230-0063, Japan
TEL	045-580-8461
Email	hanada-n@tsurumi-u.ac.jp

Public contact
Name of contact person	1st name Middle name Last name Eiji Yoshikawa
Organization	KSO Corporation
Division name	Sales department
Zip code
Address	1-9-7 Shibaura, Minato-ku, Tokyo, 105-0023, Japan
TEL	03-3452-7733
Homepage URL
Email	yoshikawa@kso.co.jp

Sponsor
Institute	KSO Corporation
Institute
Department

Funding Source
Organization	MEGMILK SNOW BRAND Co., Ltd.
Organization
Division
Category of Funding Organization	Profit organization
Nationality of Funding Organization

Other related organizations
Co-sponsor
Name of secondary funder(s)

IRB Contact (For public release)
Organization
Address
Tel
Email

Secondary IDs
Secondary IDs	NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions	鶴見大学歯学部探索歯学講座（神奈川県） Tsurumi university, School of Dental Medicine, Department of translational research (Kanagawa)

Other administrative information
Date of disclosure of the study information	2018 Year 12 Month 23 Day

Related information
URL releasing protocol
Publication of results	Unpublished

Result
URL related to results and publications
Number of participants that the trial has enrolled
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Progress
Recruitment status	Completed
Date of protocol fixation	2017 Year 07 Month 25 Day
Date of IRB	2017 Year 07 Month 25 Day
Anticipated trial start date	2017 Year 07 Month 29 Day
Last follow-up date	2017 Year 12 Month 24 Day
Date of closure to data entry
Date trial data considered complete
Date analysis concluded

Other
Other related information

Management information
Registered date	2017 Year 07 Month 27 Day
Last modified on	2022 Year 07 Month 19 Day

Link to view the page
URL(English)	https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000032520