[中圖分類號] R781.4 [文獻標志碼] B [doi] 10.7518/gjkq.2025059
Multipleadjacent gingival recessons using modified coronally advanced tunnel and double-cross suspension suturetechnique:acasereport
Gao
,ChengJiajial2,Wang
GeSongl,2
1.Dept.ofOraledicine,hooloftomatologyuniMedicalUniversityunyi563o99hina;2.Dept.ofido tics,AfiliatedStomatologicalHospitalofZunyiMedicalUniversity,Zunyi563o99,China
Supportedby:ScienceandTechnology CooperationFoundationofZunyi[ZunshiKeheHZ(2024)347];National ClinicalKeySpecialtyConstructionManuscript(MedicalAdministrationLetterfromtheNational HealthOffce[2023]213) Correspondence: Gao Li, Email: 467278759@qq.com
[Abstract]This article reports acaseofmultiple adjacent gingival recessions (MAGR)treated withamodifiedcoronallyadvanced tunnel (MCAT) techniquecombined withasubepithelial connective tisse graft (SCTG),utilizinga doublecross suspension suture technique.The patient primarily presents with ClassI and Class I gingival recession at multiple tooth sitesaccording totheCairoclassification.The treatmentprotocolinvolved initial periodontal nonsurgical therapy,followed by staged root coverage procedures using a minimally invasive MCAT technique with SCTG and doublecross suspension suture technique. Postoperative folow-ups at 12,24,and 36 months demonstrated 100 % root coverage, favorable aesthetic outcomes in terms of color match and contour,and stable long-term therapeutic results.
[Key words] multiple adjacent gingival recesion;root coverage;;modified coronally advanced tunnel technology; double-cross suspension suture technique
牙齦退縮(gingivalrecession)是指牙齦邊緣從原本的生理性位置(釉牙骨質界冠方 1~2 m m 處)向根方退縮,導致牙根表面的病理性暴露,牙齦退縮可發生于牙周健康者,也可發生于口腔衛生差及牙周病患者;導致牙齦退縮的危險因素可能是物理(牙齒突出、牙弓不齊)、機械(不當刷牙、正畸力及咬合力等)及化學藥物2(如牙齒漂白劑等)刺激對牙齦組織的直接影響,也有可能是牙齦組織的炎癥反應。牙齦退縮在根面未出現實質性缺損前的癥狀主要表現為根面敏感,影響美觀,尤其是美學區的牙齦退縮,常導致臨床牙冠“變長”而影響美觀;同時難以實現暴露根面的最佳菌斑控制3;長期暴露的根面極易磨損,導致根面缺損問題(如根面楔狀缺損、根面齲等)。
根面覆蓋術是治療牙齦退縮的牙周整形外科手術方法,理想的根面覆蓋術應使暴露的根面獲得最大限度的軟組織覆蓋,且覆蓋根面的軟組織尤其是美學區應與鄰近牙齦在色、形、質上盡可能協調。實施根面覆蓋術的方式可分為帶蒂軟組織移植和游離軟組織移植2類;帶蒂軟組織移植包括側向轉位瓣(laterallypositionedflap,LPF)、冠向復位瓣(coronallyadvanced flap,CAF)、CAF聯合引導性組織再生術(guidetissuegraft,GTR),游離軟組織移植包括游離齦移植(freegingivalgraft,FGG)和上皮下結締組織移植(sub-epithelial connective tissue graft,SCTG)。近年來大量臨床研究、系統綜述對不同的根面覆蓋術式的臨床效果進行了比較,認為聯合SCTG的雙層技術在牙齦退縮減少量、根面覆蓋率、角化齦增加量、療效的長期穩定性等方面均優于其他術式[;……