NCT02575118

Brief Summary

It has been reported that therapy with polymer-based dental filling materials was associated with higher concentrations of bisphenol A in saliva and urine directly after the treatment. The objective of the present project is to gain knowledge about the concentration of bisphenol A in saliva and urine before and after treatment with polymer-based dental filling materials, using sensitive analytical methods.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20

participants targeted

Target at below P25 for all trials

Timeline
Completed

Started Oct 2015

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2015

Completed
4 days until next milestone

First Submitted

Initial submission to the registry

October 5, 2015

Completed
9 days until next milestone

First Posted

Study publicly available on registry

October 14, 2015

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2017

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2018

Completed
5 years until next milestone

Results Posted

Study results publicly available

January 18, 2023

Completed
Last Updated

January 18, 2023

Status Verified

May 1, 2018

Enrollment Period

2.2 years

First QC Date

October 5, 2015

Results QC Date

March 1, 2022

Last Update Submit

November 25, 2022

Conditions

Outcome Measures

Primary Outcomes (2)

  • Concentration of Bisphenol A in Saliva

    Estimated bisphenol A (BPA) concentration (ng ml-1) in saliva

    1 week

  • Concentration of Bisphenol A in Urine

    Estimated bisphenol A (BPA) concentration (ng ml-1) in urine

    1 week

Interventions

Eligibility Criteria

Age16 Years - 40 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Patients scheduled for regular dental examination at the public dental clinic (Bergen Downtown District) and the Dental Clinic of the Student Welfare Organization in Bergen, who are in need for treatment with dental polymer-based filling materials, are suitable for study (inclusion / exclusion criteria) and have given their written informed consent.

You may qualify if:

  • Need for filling therapy that involves at least two surfaces with a polymer-based filling material
  • Healthy patient without any chronic diseases
  • Age 16 - 40 years
  • Informed consent given

You may not qualify if:

  • Drug abuse
  • Smoking
  • Use of snuff
  • Use of dental splint
  • Work at a dental clinic

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Public dental clinic, Bergen Downtown District AND Dental Clinic of the Student Welfare Organization in Bergen

Bergen, Norway

Location

Related Publications (1)

  • Berge TLL, Lygre GB, Lie SA, Lindh CH, Bjorkman L. Bisphenol A in human saliva and urine before and after treatment with dental polymer-based restorative materials. Eur J Oral Sci. 2019 Oct;127(5):435-444. doi: 10.1111/eos.12647. Epub 2019 Aug 8.

Biospecimen

Retention: SAMPLES WITHOUT DNA

Saliva Urine

Results Point of Contact

Title
Dr. Trine Lise Lundekvam Berge
Organization
NORCE

Study Officials

  • Lars Björkman, DDS, PhD

    NORCE Norwegian Research Centre AS

    STUDY CHAIR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 5, 2015

First Posted

October 14, 2015

Study Start

October 1, 2015

Primary Completion

December 1, 2017

Study Completion

January 1, 2018

Last Updated

January 18, 2023

Results First Posted

January 18, 2023

Record last verified: 2018-05

Locations