Alveolar Bone Loss Clinical Trial
Official title:
A Randomised Controlled Trial to Assess the Alveolar Bone Height Distal to Lower Second Molar Following Either Coronectomy or Extraction of the Adjacent Impacted Lower Third Molar
Verified date | April 2019 |
Source | King's College London |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
A coronectomy is often chosen over complete extraction of a lower third molar when the tooth
appears to be in close proximity to the inferior dental (ID) canal, as assessed on a plain
radiograph or a cone beam computer tomograph (CBCT). Following a coronectomy, the roots of
the third molar may migrate in a coronal direction. This effect, along with the
bone-preserving technique of a coronectomy over extraction, may provide increased bone height
distal to the lower second molars, when compared to extraction. Partially erupted lower third
molars, specifically those with mesio-angular impactions, are commonly associated with
reduced bone height distal to lower second molars, and cause damage to the periodontal
support of these neighboring teeth. It is assumed that maintenance of the impacted third
molars or extraction of these teeth may compromise the periodontal status of the lower second
molars. This study will investigate if coronectomy improves the bone levels, and therefore
the periodontal status, of lower second molars, and may propose an indication for a
coronectomy regardless of the proximity of the tooth to the ID canal.
Coronectomies were first proposed as a treatment option just over thirty years ago, but there
are very few long-term studies on the procedure reported in the literature. To the best of
the investigator's knowledge, this will be the first randomised controlled trial comparing
the bone height distal to the lower second molar following a coronectomy or extraction of the
lower third molar.
Status | Not yet recruiting |
Enrollment | 50 |
Est. completion date | August 2021 |
Est. primary completion date | August 2021 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Patients requiring extraction of both lower third molars - Both lower third molars to have mesio-angular impa - ctions, as assessed by location of the contact point between the crown of the third molar and the cemento-enamel junction (CEJ) of the second molar and the angulation of the third molar - Both lower third molars must lie above or clear of the ID canal as assessed on a plain radiograph or CBCT - Presence of lower second molars - Patients must be =18yrs old - Patients willing to attend follow up appointments Exclusion Criteria: - Lower third molars with caries, periapical pathology or associated lesions such as cysts - Patients who are immunocompromised, have a history of or due to have head and neck radiotherapy, chemotherapy, have previously been given or due to start intravenous bisphosphonates - Smokers (>5 cigarettes/day) - Patients involved in current research or have recently been involved with research prior to recruitment |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
King's College London |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Linear bone height distal to lower second molar tooth | Assessed by comparison of periapical radiographs pre- and post-intervention | Six months surgical intervention |
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