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Status unknownNCT05350085Updated Apr 7, 2023

Remimazolam in the Extraction of Impacted Wisdom Teeth

An interventional study of Remimazolam besylate and Midazolam in Dental Anxiety, Sedation Complication and Anterograde Amnesia, sponsored by Peking Union Medical College Hospital. Status unknown at 1 site in China. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2023-04-07.

Sponsored by Peking Union Medical College Hospital · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Apr 2022), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

Benzodiazepines, represented by midazolam, are often used for sedation in outpatient surgery in dentistry. However, midazolam has the problems of slow consciousness recovery and long recovery time, which brings trouble to the patients. Remimazolam is a new type of ultra short acting sedative anesthetic. Compared with other similar products, remimazolam has faster effect, rapid metabolism and has no accumulation, which may mean that compared with midazolam, remimazolam has a better clinical application prospect in dental outpatient surgery.

Read the detailed description

The patients were randomly divided into midazolam group and remimazolam group. The onset time of drugs, postoperative recovery time, vital signs, anterograde amnesia and other complications were observed.

02

Conditions studied

  • Dental Anxiety
  • Sedation Complication
  • Anterograde Amnesia
03

In context

Lead sponsor

Peking Union Medical College Hospital is the lead sponsor of 1,148 studies on the registry; 474 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Consenting patients will be eligible if they:

  1. Have mandibular impacted wisdom teeth that need to be extracted;
  2. Have a body mass index (BMI) between 18.5 and 30 kg/m2;
  3. Are aged between 18 and 60 years;
  4. Have American Society of Anesthesiology (ASA) classification grade of I-II;
  5. Have Modified Dental Anxiety Scale (MDAS) score > 15; and
  6. Volunteered to accept intravenous sedation.

Exclusion criteria

Exclusion Criteria:

Patients will be ineligible if they:

  1. Are pregnant;
  2. Experience respiratory infections, asthma attack or persistent state;
  3. Have contraindications to anaesthesia or a previous abnormal surgical anaesthesia recovery history;
  4. Have severe cardiopulmonary insufficiency;
  5. Have preoperative blood pressure > 160/100 mmHg or diastolic blood pressure > 100 mmHg, or blood pressure \< 90/60 mmHg;
  6. Have a neuromuscular or mental disorder that renders them unable to communicate or cooperate effectively or sign informed consent;
  7. Are suspected of abusing narcotic analgesics or sedatives;
  8. Have a known allergy or contraindication to benzodiazepines; or
  9. Have participated in other drug trials within 6 months.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
150 participants (estimated)

Study arms

  • Experimental
    Remimazolam Group

    Use remimazolam as sedation.Sufficient sedation is defined as Ramsay Sedation score grade III.

    Drug: Remimazolam besylate

  • Active comparator
    Midazolam Group

    Use midazolam as sedation.Sufficient sedation is defined as Ramsay Sedation score grade III.

    Drug: Midazolam

Interventions

  • ① initial dose: use a micro injection pump to pump remimazolam at the rate of 50mg/h, and observe for 4 \~ 8 minutes until Ramsay Sedation grade III,then start dental operation ; ② Maintenance dose: maintain the pump speed at 5 \~ 10mg/h,adjust the pump dose to maintain the patient at Ramsay Sedation grade III. ③ Additional dose: During the operation, if the patient has body movement reaction or cannot cooperate with the dentist, local anesthetics shall be given as remedy. ④ After the operation, stop the microinjection pump.

  • ① initial dose: use a micro injection pump to pump remazolam at the rate of 30mg/h, and observe for 4 \~ 8 minutes until Ramsay Sedation grade III,then start dental operation; ② Maintenance dose: maintain the pump speed at 3 \~ 6mg/h,adjust the pump dose to maintain the patient at Ramsay Sedation grade III. ③ Additional dose: During the operation, if the patient has body movement reaction or cannot cooperate with the dentist, local anesthetics shall be given as remedy. ④ After the operation, stop the microinjection pump.

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What researchers measure

Primary outcomes

  1. Recovery time of complete alertness

    Calculated from the cessation of sedative injection with micro injection pump, the patients were scored with the modified observer's assessment of alertness/sedation scale (MOAA/S) every 1 minute, and the first minute with MOAA/S score = 5 for 3 consecutive times. MOAA/S score: Range from 5(Awake) to 1(Unresponsive).

    Time frame: During treatment in hospital, an expected average of 2 hours

Secondary outcomes

  1. Anterograde amnesia duration

    Patients were given 3 different cards(including animals, fruits, vegetables, vehicles)at 0, 15,30,60 minutes after complete alertness(described at primary outcome). They were asked to recall them immediately and delayed(approximately 5 minutes after Immediate memory).

    Time frame: During treatment in hospital, an expected average of 2 hours

  2. Interruption reasons during operation

    It includes chokes, hypoxia, continuous movement that makes treatment difficult, or other situations requiring suspension of operation.

    Time frame: During treatment in hospital, an expected average of 2 hours

07

Study locations

1 of 1 sites recruiting
  • Peking Union Medical College Hospital
    Beijing, China
    Recruiting
08

References and documents

Publications

  • Jing Q, Wang W, Wu L, Wang L, Yuan B, Wang Y, Wang C, Liu L, Guan L, Yu R, Zhang Y, Sessler DI, Huang Y, Wan K, Pei L. A Comparison of the Effect of Remimazolam and Midazolam on Recovery and Preserved Memory Function for Patients with Dental Extraction Anxiety. Drug Des Devel Ther. 2025 Dec 30;19:11977-11987. doi: 10.2147/DDDT.S551322. eCollection 2025. PubMed 41488759 ↗
  • Wang L, Jing Q, Pei L, Li M, Ruan X, Chen S, Zhang Y, Wan K, Huang Y. Efficacy of continuous intravenous remimazolam versus midazolam in the extraction of impacted wisdom teeth: protocol of a randomised controlled trial. BMJ Open. 2023 Apr 25;13(4):e067908. doi: 10.1136/bmjopen-2022-067908. PubMed 37185197 ↗

Individual participant data

Plan to share: Yes — Individual participant dat that underlie the results reported, after deidentification, including texts, tables, figures, and appendices, will be shared as supplementary material.

Supporting information: Study protocol, Statistical analysis plan, Analytic code

Time frame: Beginning 3 months and ending 5 years following article publication.

Access criteria: Data will be shared with researchers who provide a methodologically sound proposal.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Apr 2022 (actual). Primary completion is estimated for Apr 2023, 11 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 10, 2022
First posted
Apr 27, 2022
StartActual
Apr 18, 2022
Primary completionEst.
Apr 1, 2023
CompletionEst.
Oct 1, 2023
Last update
Apr 7, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 7, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05350085
Collaborators
Beijing Anzhen Hospital, Beijing Shijitan Hospital, Capital Medical University
Responsible party
Sponsor
First posted
Apr 27, 2022
Start date
Apr 18, 2022
Primary completion
Apr 1, 2023 (estimated)
Completion
Oct 1, 2023 (estimated)
Last update
Apr 7, 2023

Study contacts

Lijian Pei, MD
Contact
hazelbeijing@vip.163.com
18612672127

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Remimazolam besilate

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