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Zhang Y, Liu M, Ma H, Zhang X, Li N, Chen X, Cheng Y, Li H, Xie Q, Gu J, Zhao B, Ren X, Wang X. Effect of impacted mandibular third molar extraction on periodontal microbiota and clinical parameters of adjacent teeth: A randomized clinical trial. J Craniomaxillofac Surg 2024; 52:937-947. [PMID: 39003214 DOI: 10.1016/j.jcms.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 04/03/2024] [Accepted: 06/08/2024] [Indexed: 07/15/2024] Open
Abstract
It is urgently necessary to clarify the effect of extraction of impacted mandibular third molar (IMTM) on the periodontal tissue of adjacent second molars (ASMs). In this study, the ASM periodontal condition and pathogenic microbes were assessed before IMTM extraction and at 1, 4, 8 and 12 weeks postoperatively. Based on the inclusion and exclusion criteria, our study revealed that IMTM extractions adversely affected distal - periodontal probing depth (dPPD), attachment loss (dAL), plaque index (dPLI) and bleeding on probing (dBOP) within 8 weeks, but these indices gradually normalize after 12 weeks. The subgingival pathogens near the ASMs distal surface, Porphyromonas and Pseudomonas, were significantly increased postoperatively. Moreover, relevance of ASMs clinical indices and subgingival microbes after IMTM extractions was found. In contrast to the situation in chronic periodontitis, the effects of IMTM extraction on dPPD, dAL, dPLI and dBOP of ASMs were mainly correlated with Pseudomonas. Additionally, while the IMTM extractions have adverse distal periodontal indices of ASMs within 8 weeks and increase subgingival pathogens, the modified triangular flap (MTF) had fewer distal periodontal indices and less Pseudomonas. Compared to the traditional envelope flap and triangular flap, the MTF benefits the periodontal health, which could be considered as the priority option for IMTM extractions.
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Affiliation(s)
- Yuan Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Meixian Liu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Huanhuan Ma
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Xiaoxuan Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Na Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Xiaohang Chen
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Yongfeng Cheng
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Huifei Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Qingpeng Xie
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Jiawen Gu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Bin Zhao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China.
| | - Xiuyun Ren
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China.
| | - Xing Wang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China; Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China.
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Tang SM, Liu DX, Xiong ZY, Shao YQ, Jiang J, Chen L, Xiong Q, Wu SY, Xuan DY. Comparison of immediate vs. delayed guided tissue regeneration in Infrabony defect of second molars after adjacent third molar extraction: a retrospective study. BMC Oral Health 2024; 24:830. [PMID: 39044179 PMCID: PMC11265319 DOI: 10.1186/s12903-024-04591-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 07/08/2024] [Indexed: 07/25/2024] Open
Abstract
BACKGROUND The distal aspect of the second molar (d-M2) often exhibits infrabony defects due to the adjacent third molar. Although the defects can be treated by guided tissue regeneration (GTR) after removing the third molar, the optimal timing remains uncertain following third molar removal in clinical decision-making. This study aimed to compare delayed and immediate GTR treatments to assist in clinical decision-making. METHODS D-M2 infrabony defects with a minimum 1-year follow-up were collected and divided into three groups: Immediate GTR group, which underwent third molar extraction and received GTR simultaneously; Delayed GTR group, which underwent delayed GTR at least 3 months after third molar extraction; and Control group, which underwent only scaling and root planing during third molar extraction. The clinical and radiographic parameters related to the infrabony defect before GTR and post-surgery were evaluated using the Kruskal-Wallis test or one-way ANOVA, followed by post-hoc Dunn's test or the Bonferroni test for pairwise comparisons. RESULTS A total of 109 d-M2 infrabony defects were assessed. No significant differences were found between the two GTR groups, although both of them showed significant reductions in infrabony defect depth: the immediate GTR group (2.77 ± 1.97 mm vs. 0.68 ± 1.03 mm, p < 0.001) and the delayed GTR group (2.98 ± 1.08 mm vs. 0.68 ± 1.03 mm, p < 0.001) compared to the control group. CONCLUSION GTR can effectively improve d-M2 infrabony defects when the third molar is removed, whether simultaneously or delayed. Patients may experience less discomfort with immediate GTR treatment as it requires only one surgery.
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Affiliation(s)
- Si-Min Tang
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Di-Xin Liu
- Department of Periodontology, Hangzhou Stomatology Hospital, 1 Pinghai Road, Hangzhou, Zhejiang Province, China
| | - Zi-Yun Xiong
- Department of Periodontology, Hangzhou Stomatology Hospital, 1 Pinghai Road, Hangzhou, Zhejiang Province, China
| | - Yi-Qian Shao
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jing Jiang
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Li Chen
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qin Xiong
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuo-Yan Wu
- College of Dentistry, Zhejiang Chinese Medical University, Hangzhou, China
| | - Dong-Ying Xuan
- Department of Periodontology, Hangzhou Stomatology Hospital, 1 Pinghai Road, Hangzhou, Zhejiang Province, China.
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Lu Z, Bingquan H, Jun T, Fei G. Effectiveness of concentrated growth factor and laser therapy on wound healing, inferior alveolar nerve injury and periodontal bone defects post-mandibular impacted wisdom tooth extraction: A randomized clinical trial. Int Wound J 2024; 21:e14651. [PMID: 38272792 PMCID: PMC10789919 DOI: 10.1111/iwj.14651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
The extraction of wisdom teeth with mandibular impact frequently results in complications including damage to the inferior alveolar nerve (IAN) and malformations of the bone. The objective of this research endeavour was to assess the efficacy of low-level laser therapy and concentrated growth factor (CGF) in facilitating nerve recovery and wound healing in such instances. A total of thirty-one patients (mean age 27.52 ± 5.79 years) who presented with IAN injury after extraction were randomly assigned to one of three groups: control group (which received oral mecobalamin), CGF group (which received CGF gel applied to the extraction sockets) and laser group (which received low-level lasers (808 nm, 30 mW, 10 J/cm2 )) at the extraction site. Patients' recovery from IAN paresthesia was evaluated seven times over the course of 14 days utilizing visual analogue scale (VAS) and the pinprick test (PP). At multiple intervals following surgery, periodontal probing and bone level measurements were utilized to assess the recovery of both soft and hard tissues. The findings revealed that, compared with the control group, both the CGF and laser treatment groups exhibited a markedly greater improvement in VAS scores and wound healing of soft tissues, as well as in PP results (p < 0.001), indicating enhanced wound healing processes. Despite these improvements, there was no significant difference in wound healing outcomes between the CGF and laser groups. Notably, the CGF group showed a statistically significant improvement in healing bone defects at 30 and 90 days post-treatment compared with the control group (p = 0.003 and p = 0.004, respectively), underscoring its effectiveness in bone healing as a critical aspect of the overall wound healing process. However, in terms of other wound healing comparisons, no significant differences were observed. CGF and laser therapy significantly enhanced the healing of wounds, including soft tissue and bone recovery, in addition to accelerating the recovery of IAN injuries following mandibular wisdom tooth extraction. Although both treatments were equally effective in nerve recovery, CGF notably excelled in promoting bone healing, suggesting its pivotal role in comprehensive wound healing. This highlights that both CGF and laser therapy are viable options for not only nerve recovery but also for overall wound healing in such dental procedures.
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Affiliation(s)
- Zhu Lu
- Department of StomatologySouth China Hospital Affiliated to Shenzhen UniversityShenzhenGuangdongChina
| | - Huang Bingquan
- Department of StomatologyLonggang Central Hospital of ShenzhenShenzhenGuangdongChina
| | - Tan Jun
- Foshan Stomatological HospitalFoshanGuangdongChina
| | - Ge Fei
- Department of StomatologySouth China Hospital Affiliated to Shenzhen UniversityShenzhenGuangdongChina
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Zhao J, Zhang Y, Cheng Y, Xie S, Li DD, Zhang PF, Ren XY, Wang X. Effects of modified triangular flap for third molar extraction on distal periodontal health of second molar: A randomized controlled study. Heliyon 2023; 9:e16161. [PMID: 37234672 PMCID: PMC10208835 DOI: 10.1016/j.heliyon.2023.e16161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/26/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Objective The aim of this study was to assess the effect of flap design for impacted mandibular third molar extraction on the distal periodontal tissue of their neighbors clinically, immunologically, and microbiologically. Study design This randomized controlled study comprised 100 patients who were allocated randomly to receive either a triangular flap or a modified triangular flap. The distal periodontal pocket depth, plaque index, bleeding on probing, the presence of Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis and Prevotella intermedia, and the level of interleukin-1β, interleukin-8 and matrix metalloproteinase-8 of adjacent second molars were measured at baseline, and 1, 4 and 8 weeks after surgery. Results After 1 and 4 weeks, distal periodontal conditions of adjacent second molars deteriorated, along with an increase in subgingival microbiota and inflammatory factors in both groups. And compared to the modified triangular flap group, the triangular flap group significantly increased (p < 0.05). Prevotella intermedia, interleukin-1β and probing depth were positively correlated in both groups. After 8 weeks, they returned to the preoperative level. Conclusions In this study, both flap designs for impacted mandibular third molar extractions was associated with worse clinical periodontal indices, increased inflammatory biomarkers of gingival crevicular fluid, and more subgingival pathogenic microbiota within 4 weeks. But compared with the triangular flap, the modified triangular flap was better for distal periodontal health of adjacent second molars, which provides certain directions for clinical treatment.
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Affiliation(s)
- Jing Zhao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Yuan Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Yongfeng Cheng
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Si Xie
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | | | - Peng-Fei Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Xiu-Yun Ren
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
| | - Xing Wang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, China
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Ren Y, Fan L, Alkildani S, Liu L, Emmert S, Najman S, Rimashevskiy D, Schnettler R, Jung O, Xiong X, Barbeck M. Barrier Membranes for Guided Bone Regeneration (GBR): A Focus on Recent Advances in Collagen Membranes. Int J Mol Sci 2022; 23:ijms232314987. [PMID: 36499315 PMCID: PMC9735671 DOI: 10.3390/ijms232314987] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/25/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Guided bone regeneration (GBR) has become a clinically standard modality for the treatment of localized jawbone defects. Barrier membranes play an important role in this process by preventing soft tissue invasion outgoing from the mucosa and creating an underlying space to support bone growth. Different membrane types provide different biological mechanisms due to their different origins, preparation methods and structures. Among them, collagen membranes have attracted great interest due to their excellent biological properties and desired bone regeneration results to non-absorbable membranes even without a second surgery for removal. This work provides a comparative summary of common barrier membranes used in GBR, focusing on recent advances in collagen membranes and their biological mechanisms. In conclusion, the review article highlights the biological and regenerative properties of currently available barrier membranes with a particular focus on bioresorbable collagen-based materials. In addition, the advantages and disadvantages of these biomaterials are highlighted, and possible improvements for future material developments are summarized.
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Affiliation(s)
- Yanru Ren
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
| | - Lu Fan
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | | | - Luo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Denis Rimashevskiy
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
- Correspondence: ; Tel.: +49-(0)-176-81022467
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