Investigation of the effect of oak extract (quercus) on nausea reflex

The effect of quercus extract on the gag reflex in dental patient

Status

Recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT20130211012438N33

Enrollment

Registered

2020-11-16

Start date

2020-09-22

Completion date

Unknown

Last updated

2020-11-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Gag reflex. Nausea and vomiting

Interventions

Intervention 1: Intervention group: Recipient of candy containing oak extract. Intervention 2: Control group: Recipient of candy without oak extract, containing water and sugar.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: History of gag experience in dentistry

Exclusion criteria

Exclusion criteria: 1- Existence of any type of central and peripheral nerve lesions Existence of any type of oral lesions Taking any medicine Suffering from gastrointestinal and respiratory diseases Allergy to medicinal plants

Design outcomes

Primary

Measure	Time frame
Gag reflex. Timepoint: Before examination and 5 minutes after using candies containing oak and placebo extracts. Method of measurement: Before and 5 minutes after sampling by Abslang. Criteria for measuring the severity of nausea: No nausea: No gag during contact with high risk surfaces of the mouth such as soft palate and tonsils Hakm: Gag formation during contact with high risk surfaces of the mouth such as soft palate and tonsils Medium: Gag formation during contact with low levels Risk of mouth such as hard palate and hard floor: Creating a gag before contact with an abscess, such as when opening the mouth and seeing an abscess.	—

Measure

Time frame

Gag reflex. Timepoint: Before examination and 5 minutes after using candies containing oak and placebo extracts. Method of measurement: Before and 5 minutes after sampling by Abslang. Criteria for measuring the severity of nausea: No nausea: No gag during contact with high risk surfaces of the mouth such as soft palate and tonsils Hakm: Gag formation during contact with high risk surfaces of the mouth such as soft palate and tonsils Medium: Gag formation during contact with low levels Risk of mouth such as hard palate and hard floor: Creating a gag before contact with an abscess, such as when opening the mouth and seeing an abscess.

—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohsen Taghizadeh

Kashan University of Medical Sciences

taghizadeh_m@kaums.ac.ir+98 36 1555 0021

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026