Prevention of Mandibular Third Molar Extraction- Associated Periodontal Defects Using Platelet-Rich Fibrin
調査の概要
詳細な説明
Eighteen young patients with bilateral impacted mandibular third molars will be selected. All 36 cases of impactions will be selected for a split mouth study and randomly treated by using 2 different therapeutic approaches, thereby yielding 2 different study groups, each of which is composed of 18 cases: in one side the post-extraction socket is left healing spontaneously, on the other side the socket is filled with PRF.
CAL at the distal surface of the lower second molar is chosen as primary outcome.
Criteria will be the presence of a pocket distal to the mandibular second molar with a probing depth >7 mm and a probing clinical attachment level >6mm.
This study was designed as a single-blind research since subjects will be unaware of their treatment allocation. A software will be used to produce a random sequence of 18 integer numbers without duplicates generated from atmospheric noise and concealed in closed envelopes by one of the investigators. At the time of the patient's first surgery, the envelope will be opened and patient allocated either to group 1 (PRF on the right side, spontaneous healing on the left side), for allocation numbers 1-9, or group 2 (spontaneous healing on the right side, PRF on the left side), for allocation numbers 10-18.
One clinician, not involved in patient treatment and not aware of what therapeutic approach used for the different sites of treatment, will perform all clinical measurements (PD, CAL, gingival recession, plaque index and gingival bleeding index) before and after 12 and 18 weeks of surgery.
Clinical and radiographical measurements will be recorded at 12 and 18 weeks after the surgery. The Student t test will be used to compare the differences between the 2 groups.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Naples、イタリア、80131
- Gilberto Sammartino
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion criteria Patients of both genders and any race, between 18 and 35 year-old
- Periodontally health patients and treated periodontally compromised patients
- Enrollment on a regular supportive periodontal therapy (SPT) program.
- Full-mouth plaque score (FMPS)< 25% at baseline;
- Full-mouth bleeding score (FMBS)< 25% at baseline;
- Patients having bilateral mesioangular impacted mandibular third molars with the presence of a pocket distally to the mandibular second molar with a probing depth (PD) ≥7 mm
- Intact buccal and lingual cortical bone of the post-extraction site
Exclusion Criteria:
- General contra-indications for surgery (systemic disease, compromised immune system etc);
- Tobacco smoking
- Pregnancy and lactation
- Untreated periodontal conditions;
- Acute infection in the site of the extraction
- Patients taking any medications which might interfere with coagulation
- Platelet count < 150000/mm3
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：防止
- 割り当て：ランダム化
- 介入モデル：クロスオーバー割り当て
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的：PRF (platelet-rich fibrin)
PRF will be used after the extraction of the third molar to prevent periodontal defects to second molar
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After loco-regional anesthesia was administered, a full-thickness mucoperiosteal flap was raised.
The flap incision was extended from the vestibular side of the retromolar trigon to the second molar, corresponding to its distolingual cusp.
The incision continued intrasulcular at the second molar and proceeded with a release incision distally to the papilla between the first and second molars, on a 45° angle.
An osteotomy using a Lindemann burr under constant irrigation, followed by an odontotomy using a diamond burr was performed, if necessary
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アクティブコンパレータ：spontaneous healing
after the extraction of the third molar the socket will be left to heal spontaneously
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After loco-regional anesthesia was administered, a full-thickness mucoperiosteal flap was raised.
The flap incision was extended from the vestibular side of the retromolar trigon to the second molar, corresponding to its distolingual cusp.
The incision continued intrasulcular at the second molar and proceeded with a release incision distally to the papilla between the first and second molars, on a 45° angle.
An osteotomy using a Lindemann burr under constant irrigation, followed by an odontotomy using a diamond burr was performed, if necessary
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Clinical attachment level change
時間枠：12 and 18 weeks
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the clinical attachment level is the distance between the gingival margin to the cemento-enamel junction. the measurement is made by using a Williams periodontal probe. Differences in changes are measured from baseline to 12 and 18 weeks. |
12 and 18 weeks
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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probing depth change
時間枠：12 and 18 weeks
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The probing depth is the distance from the free end of the gingival margin to the bottom of the periodontal pocket.
The measurement is made by using a Williams periodontal probe.
Differences in changes are measured from baseline to 12 and 18 weeks.
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12 and 18 weeks
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gingival recession change
時間枠：12 and 18 weeks
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The distance between the cemento-enamel junction and gingival margin gives the level of recession. The measurement is made by using a Williams periodontal probe. Differences in changes are measured from baseline to 12 and 18 weeks. |
12 and 18 weeks
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協力者と研究者
スポンサー
捜査官
- 主任研究者：Gilberto Sammartino, Professor、Federico II University
出版物と役立つリンク
一般刊行物
- Cabaro S, D'Esposito V, Gasparro R, Borriello F, Granata F, Mosca G, Passaretti F, Sammartino JC, Beguinot F, Sammartino G, Formisano P, Riccitiello F. White cell and platelet content affects the release of bioactive factors in different blood-derived scaffolds. Platelets. 2018 Jul;29(5):463-467. doi: 10.1080/09537104.2017.1319046. Epub 2017 Jun 21.
- Sammartino G, Dohan Ehrenfest DM, Carile F, Tia M, Bucci P. Prevention of hemorrhagic complications after dental extractions into open heart surgery patients under anticoagulant therapy: the use of leukocyte- and platelet-rich fibrin. J Oral Implantol. 2011 Dec;37(6):681-90. doi: 10.1563/AAID-JOI-D-11-00001. Epub 2011 Jun 30.
- Sammartino G, Tia M, Marenzi G, di Lauro AE, D'Agostino E, Claudio PP. Use of autologous platelet-rich plasma (PRP) in periodontal defect treatment after extraction of impacted mandibular third molars. J Oral Maxillofac Surg. 2005 Jun;63(6):766-70. doi: 10.1016/j.joms.2005.02.010.
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
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最終確認日
詳しくは
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extraction of mandibular third molarの臨床試験
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