Surgical Extrusion for the Clinical Crown Lengthening: a 12-months Clinical Study

Study Overview
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Brief Summary
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This is a prospective study in which surgical extrusion of single-rooted teeth is carried out by the same operator in 15 consecutive patients. Main objective: to evaluate the soft tissue rebound of the teeth 1 year after the surgery. Null hypothesis (H0): surgical extrusion is not a predictable treatment for the restoration of single rooted teeth.

Official Title
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Surgical Extrusion for the Clinical Crown Lengthening: a 12-months Prospective Clinical Study

Conditions
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Tooth Decay

Intervention / Treatment
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* Procedure: Surgical extrusion


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Systemically and periodontally healthy, non-smoking patients. Single-rooted, straight teeth with insufficient ferrule, which require restorative treatment. Teeth with a favorable crown-root ratio. Exclusion Criteria: Severe systemic disease patients (American Society of Anesthesiologists classification 1 or 2). Multi-rooted, curved and/or short teeth. Teeth with an uncontrolled periodontal pathology. Pregnant women. Teeth with types ll or lll mobility.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Surgical extrusion group<br>Surgical extrusion is performed in each patient of this group | Procedure: Surgical extrusion<br>* Surgically coronal reposition of the tooth<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Soft tissue rebound | mm | 12 months after the surgical extrusion | 
| Tooth mobility (Miller classification) | mm | 12 months after the surgical extrusion | 
| Periapical lesion occurrence | Assessed as the presence or not of a radiolucency at periapical radiograph (yes/no) | 12 months after the surgical extrusion | 
| Patient's response to pain or discomfort at percussion test | Patient's response measured by yes/no | 12 months after the surgical extrusion | 
| Patient's response to pain or discomfort at palpation test | Patient's response measured by yes/no | 12 months after the surgical extrusion | 
| Root resorption occurrence | Assessed as the presence or not of an inflammatory root resorption and a replacement root resorption at periapical radiograph | 12 months after the surgical extrusion | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Periodontal probing | mm | 12 months after the surgical extrusion | 
| Gum bleeding on periodontal probing (yes/no) | Visual | 12 months after the surgical extrusion | 
| Tooth plaque quantity | Measured visually according to Turesky plaque index, in which the best score is 0 (no plaque) and the worst score is 5 (plaque covering 2/3 or more the crown of the tooth). | 12 months after the surgical extrusion | 
| Interproximal papillae height | Measured visually according to Jemt's index, in which the best score is 3 (interproximal space completely occupied) and the worst score is 0 (absent interproximal papilla). | 12 months after the surgical extrusion | 
| Marginal bone loss | mm | 12 months after the surgical extrusion | 
| Crown-root ratio | mm | 12 months after the surgical extrusion | 
| Patient's satisfaction | Measured visually using a visual analogue scale, in which the best score is 0 (highest level of patient's satisfaction) and the worst score is 10 (lowest level of patient's satisfaction). | 12 months after the surgical extrusion | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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extrusion