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Completed

NCT Number: NCT03516201

Oral Health in Bariatric Patients

As few is known about the oral health of bariatric patients, this study aimed to analyze the prevalence and severity of erosive tooth wear, dental caries and periodontal diseases of obese patients who underwent bariatric surgery in comparison to obese patients without bariatric procedures.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Dept. of Prev. Dentistry, Periodontology and Cariology, University Medical Center Göttingen

Göttingen, 37075, Germany

About this study

The prevalence of overweight and obesity is increasing since the 1980s. Being associated with several risk factors such as hypertension, hyperinsulinemia and hyperlipidemia, obesity presents an immediate and long-term health risk for diabetes mellitus, heart diseases, osteoarthritis and certain forms of cancer. For the control of obesity several therapy options have been developed: Beside conservative treatments including change of diet and lifestyle, bariatric surgery is considered as a promising option for patients with severe obesity (BMI ≥ 40 kg/m2). Allowing impressive weight loss from 40 to 80% and effective reduction of comorbidities, bariatric surgery shows some negative/adverse effects as well, like kidney problems, hyperparathyroidism, anemia and metabolic bone diseases. For oral health, two facts are particularly important to consider: Firstly, chronic regurgitation reaching the oral cavity is an important risk factor for erosive tooth wear which initially appear as smooth silky-shining glazed surfaces. Further progress is often associated with hypersensitivities and aesthetic deficits. Over time, often substantial loss can been observed, provoking hypersensitivities and aesthetic deficits. Secondly, depending on the type of bariatric surgery, pronounced postoperative metabolic and nutritional changes can be observed which also might influence oral health. Aim of this study is to analyze the prevalence and severity of erosive tooth wear, dental caries and periodontal diseases of obese patients who underwent bariatric surgery in comparison to obese patients without bariatric procedures.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Age ≥ 18 years
  • BMI ≥ 25 kg/m2 without or after bariatric surgery

Exclusion criteria

  • refusal for participation
  • age <18 years
  • BMI <25 kg/m2

Treatment and study plan

Primary outcomes

  1. Oral health of obese adults without bariatric surgery - attachment loss

    Time frame: 10-15 Minutes

    probing depths (mm) + recessions (mm)

  2. Oral health of obese adults without bariatric surgery - BOP

    Time frame: 2 Minutes

    BOP (Bleeding on probing, %) as indicator of inflammation

  3. Oral health of obese adults without bariatric surgery - dental caries

    Time frame: 2-5 Minutes

    ICDAS (International Caries Detection and Assessment System II, 0-6), presence of restaurations/ crowns (yes/no): calculation of DMFT

  4. Oral health of obese adults without bariatric surgery - erosive tooth wear

    Time frame: 1-2 Minutes

    BEWE (Basic erosive wear examination, 0-3)

Secondary outcomes

  1. Oral health of obese adults after bariatric surgery - attachment loss

    Time frame: 10-15 Min

    probing depths (mm) + recessions (mm)

  2. Oral health of obese adults after bariatric surgery - BOP

    Time frame: 2 Minutes

    BOP (Bleeding on probing, %) as indicator of inflammation

  3. Oral health of obese adults after bariatric surgery - dental caries

    Time frame: 2-5 Minutes

    ICDAS (International Caries Detection and Assessment System II, 0-6), presence of restaurations/ crowns (yes/no): calculation of DMFT

  4. Oral health of obese adults after bariatric surgery - erosive tooth wear

    Time frame: 1-2 Minutes

    BEWE (Basic erosive wear examination, 0-3)

Sponsors and collaborators

Lead sponsor

University of Göttingen

Other

Registry information

Important dates

Study start
2018
Primary completion
2020
Study completion
2020
First posted
May 4, 2018
Registry last updated
Jan 27, 2026

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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