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Reich M, Hannig C, Hannig M, Kümmerer K, Kensche A. The Lipid Composition of the in situ pellicle. Arch Oral Biol 2022; 142:105493. [DOI: 10.1016/j.archoralbio.2022.105493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 11/02/2022]
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Kensche A, Pötschke S, Hannig C, Dürasch A, Henle T, Hannig M. Efficacy of mouthrinses with bovine milk and milk protein isolates to accumulate casein in the in situ pellicle. Clin Oral Investig 2020; 24:3871-3880. [DOI: 10.1007/s00784-020-03253-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/26/2020] [Indexed: 10/24/2022]
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Ebert N, Kensche A, Löck S, Hadiwikarta WW, Hänsch A, Dörr W, Krause M, Hannig C, Baumann M. Results of a randomized controlled phase III trial: efficacy of polyphenol-containing cystus® tea mouthwash solution for the reduction of mucositis in head and neck cancer patients undergoing external beam radiotherapy. Strahlenther Onkol 2020; 197:63-73. [PMID: 32970162 DOI: 10.1007/s00066-020-01684-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 08/24/2020] [Indexed: 01/15/2023]
Abstract
PURPOSE To determine the effect of Cystus® tea (Naturprodukte Dr. Pandalis GmbH & Co. KG) as mouthwash compared to sage tea on oral mucositis in patients undergoing radio(chemo)therapy for head and neck cancer. METHODS In this randomized, prospective phase III study, 60 head and neck cancer patients with primary or postoperative radio(chemo)therapy were included between 04/2012 and 06/2014. They received either sage or Cystus® tea for daily mouthwash under therapy. Mucositis was scored twice a week following the Radiation Therapy Oncology Group and the European Organization for Research and Treatment Cancer (RTOG/EORTC) scoring system. Dental parameters were also recorded. Statistical evaluation of the primary endpoint was performed using t‑test and log rank test. RESULTS Data from 57 patients could be evaluated. Patient characteristics showed no significant difference between the two groups (n = 27 sage; n = 30 Cystus®). A total of 55 patients received the prescribed dose (60-66 Gy postoperative; 70-76.8 Gy primary). Mucositis grade 3 was observed in 23 patients (n = 11 sage; n = 12 Cystus®) and occurred between day 16 and 50 after start of therapy. There was no significant difference between the two groups in latency (p = 0.75) and frequency (p = 0.85) of the occurrence of mucositis grade 3. The self-assessment of the oral mucosa and the tolerability of the tea also showed no significant differences. Occurrence of dental pathologies appeared to increase over time after radiotherapy. CONCLUSION Cystus® and sage tea have a similar effect on the occurrence of radiation-induced mucositis regarding latency and incidence. Cystus® tea mouthwash solution is tolerated well and can be applied in addition to intensive oral care and hygiene along with the application of fluorides.
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Affiliation(s)
- Nadja Ebert
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany.
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany.
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
| | - Anna Kensche
- Clinic of Operative and Pediatric Dentistry, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
| | - Steffen Löck
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | | | - Anna Hänsch
- Clinic of Operative and Pediatric Dentistry, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
| | | | - Mechthild Krause
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
- Helmholtz Association/Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden-Rossendorf, Germany
| | - Christian Hannig
- Clinic of Operative and Pediatric Dentistry, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
| | - Michael Baumann
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität, Dresden, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Ruprecht-Karls-University, Heidelberg, Germany
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Kirsch J, Hannig M, Winkel P, Basche S, Leis B, Pütz N, Kensche A, Hannig C. Influence of pure fluorides and stannous ions on the initial bacterial colonization in situ. Sci Rep 2019; 9:18499. [PMID: 31811248 PMCID: PMC6898421 DOI: 10.1038/s41598-019-55083-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 11/18/2019] [Indexed: 12/12/2022] Open
Abstract
The present clinical-experimental study aims to examine the effect of pure experimental fluoride solutions and stannous chloride on the initial oral bioadhesion under in situ conditions. After 1 min of pellicle formation on bovine enamel slabs, 12 subjects rinsed with 8 ml of the fluoride test solutions (NaF, Na2PO3F, AmF, SnF2,) with 500 ppm fluoride concentration each for 1 min. Additionally, rinsing without a solution (control) and rinsing with 1563 ppm SnCl2 solution took place for 1 min. Afterwards, fluorescence microscopy took place to visualize bacterial adhesion and glucan formation (8 h oral exposition) with DAPI and ConA and the BacLight method. TEM was performed to visualize the pellicle ultrastructure together with EDX to detect stannous ions. The rinsing solutions with pure SnF2 and SnCl2 reduced significantly the initial bacterial colonization (DAPI). While, NaF and Na2PO3F showed no significant effect compared to the control. There was no significant difference between AmF, SnF2 and SnCl2. All tested experimental solutions showed no reducing effect on the glucan formation. Considerable alterations of the pellicle ultrastructure resulted from rinsing with the Sn-containing solutions. SnF2 appears to be the most effective type of fluoride to reduce initial bacterial colonization in situ. The observed effects primarily have to be attributed to the stannous ions' content.
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Affiliation(s)
- Jasmin Kirsch
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307, Dresden, Germany.
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421, Homburg, Saar, Germany
| | - Pia Winkel
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307, Dresden, Germany
| | - Sabine Basche
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307, Dresden, Germany
| | - Birgit Leis
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421, Homburg, Saar, Germany
| | - Norbert Pütz
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421, Homburg, Saar, Germany
| | - Anna Kensche
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307, Dresden, Germany
| | - Christian Hannig
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307, Dresden, Germany
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Kensche A, Dürasch A, König B, Henle T, Hannig C, Hannig M. Characterization of the in situ pellicle ultrastructure formed under the influence of bovine milk and milk protein isolates. Arch Oral Biol 2019; 104:133-140. [PMID: 31202148 DOI: 10.1016/j.archoralbio.2019.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVES The present study aimed to investigate if bovine milk or milk protein isolates, respectively, alter the ultrastructure of thein situ pellicle and might therefore have an influence on oral health. METHODS In situ pellicle samples were formed on bovine enamel slabs exposed in the oral cavity of three subjects for 6, 30, 60 or 120 min. After 3 min of pellicle formation, mouthrinses were performed for 3 min with (non-)homogenized UHT- or fresh milk (0.3% or 3.8% fat), 30% UHT-treated cream or different types of casein- or milk protein isolates containing preparations. The specimens were removed after the exposure times and transmission electron microscopy (TEM) was performed. Native pellicle samples served as controls. RESULTS Topical ultrastructural pellicle modifications were detected after mouthrinses with all types of homogenized UHT- or fresh milk and after the application of a 3% native casein micelles containing experimental solution. Atypical globular protein structures, identified as casein micelles, were temporarily adsorbed onto the pellicle. They were closely associated with lipid droplets. Furthermore, the mouthrinses occasionally affected the morphology of salivary bacteria. However, no notable ultrastructural alterations remained after 120 min of pellicle formation. CONCLUSION For the first time, bovine milk- and micellar casein-induced pellicle modifications were revealed by TEM. The adsorption of micellar casein is possibly due to its molecular interactions. CLINICAL SIGNIFICANCE Bovine milk or micellar caseins provide some potential for the development of preventive strategies against bacterial biofilm formation or erosive processes at the tooth surface.
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Affiliation(s)
- A Kensche
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307 Dresden, Germany.
| | - A Dürasch
- Chair of Food Chemistry, TU Dresden, Dresden, Germany
| | - B König
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421 Homburg/Saar, Germany
| | - T Henle
- Chair of Food Chemistry, TU Dresden, Dresden, Germany
| | - C Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307 Dresden, Germany
| | - M Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421 Homburg/Saar, Germany
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Kensche A, Buschbeck E, König B, Koch M, Kirsch J, Hannig C, Hannig M. Effect of fluoride mouthrinses and stannous ions on the erosion protective properties of the in situ pellicle. Sci Rep 2019; 9:5336. [PMID: 30926846 PMCID: PMC6441001 DOI: 10.1038/s41598-019-41736-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 03/13/2019] [Indexed: 12/19/2022] Open
Abstract
The particular feature of this study is the investigation of effects of pure fluoride- or stannous ions based mouthrinses on the erosion protective properties and the ultrastructure of the in situ pellicle (12 volunteers). Experimental solutions were prepared either from 500 ppm NaF, SMFP, AmF or SnF2 or 1563 ppm SnCl2, respectively. After 1 min of in situ pellicle formation on bovine enamel slabs, rinses with one of the preparations were performed for 1 min and intraoral specimens’ exposure was continued for 28 min. Native enamel slabs and rinses with bidestilled water served as controls. After oral exposure, slabs were incubated in HCl (pH 2; 2.3; 3) for 120 s and kinetics of calcium- and phosphate release were measured photometrically; representative samples were analysed by TEM and EDX. All mouthrinses reduced mineral loss compared to the native 30-min pellicle. The effect was pH-dependent and significant at all pH values only for the tin-containing mouthrinses. No significant differences were observed between the SnF2- and the SnCl2-containing solutions. TEM/EDX confirmed ultrastructural pellicle modifications. SnF2 appears to be the most effective type of fluoride to prevent erosive enamel demineralisation. The observed effects primarily have to be attributed to the stannous ions’ content.
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Affiliation(s)
- A Kensche
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany.
| | - E Buschbeck
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - B König
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421, Homburg/Saar, Germany
| | - M Koch
- Physical Analytics, INM - Leibnitz Institute for New Materials, D-66123, Saarbrücken, Germany
| | - J Kirsch
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - C Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - M Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421, Homburg/Saar, Germany
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Kensche A, Kirsch J, Mintert S, Enders F, Pötschke S, Basche S, König B, Hannig C, Hannig M. Impact of customary fluoride rinsing solutions on the pellicle's protective properties and bioadhesion in situ. Sci Rep 2017; 7:16584. [PMID: 29185495 PMCID: PMC5707358 DOI: 10.1038/s41598-017-16677-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/10/2017] [Indexed: 01/20/2023] Open
Abstract
This study investigated the impact of customary fluoride based mouthrinses on the ultrastructure and the functional properties of the in situ pellicle, considering the prevention of erosion (8 volunteers) and initial biofilm formation (12 volunteers). Bovine enamel slabs were carried intraorally. After 1 min of pellicle formation, the subjects rinsed with elmex Kariesschutz (A), Dontodent Med Care (B), meridol (C) or elmex Zahnschmelzschutz Professional (D) for 1 min. In situ pellicle formation was continued up to 30 min/8 h before processing the slabs in vitro. Erosion was simulated by incubating the specimens in HCl (pH 3.0, 2.3, 2.0) for 120 s, measuring the kinetics of calcium/phosphate release photometrically; representative samples were evaluated by TEM and EDX. Bacterial adhesion was visualized fluorescence microscopically (DAPI/BacLight). Native enamel slabs or physiological pellicle samples served as controls. All investigated mouthrinses enhanced the erosion preventive pellicle effect in dependence of the pH-value. A significant decrease of Ca/P release at all pH values was achieved after rinsing with D; TEM/EDX confirmed ultrastructural pellicle modifications. All mouthrinses tendentially reduced bacterial adherence, however not significantly. The mouthrinse containing NaF/AmF/SnCl2 (D) offers an effective oral hygiene supplement to prevent caries and erosion.
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Affiliation(s)
- A Kensche
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany.
| | - J Kirsch
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - S Mintert
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - F Enders
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - S Pötschke
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - S Basche
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - B König
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421, Homburg/Saar, Germany
| | - C Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - M Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D- 66421, Homburg/Saar, Germany
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Rosenauer T, Wagenschwanz C, Kuhn M, Kensche A, Stiehl S, Hannig C. The Bleeding on Brushing Index: a novel index in preventive dentistry. Int Dent J 2017; 67:299-307. [PMID: 28503739 DOI: 10.1111/idj.12300] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the suitability of a dichotomous index, based on a special interdental brushing tool, to detect initial pathological processes in interproximal areas. Furthermore, different techniques of interdental hygiene were compared. METHODS Participants (n = 108) were instructed to clean their teeth using the Bass technique and were randomly assigned to three groups according to the type of interdental cleaning used: group A, use of interdental brushes; group B, no interdental hygiene (the control group); and group C, use of dental floss. Approximal Plaque Index (API), Plaque Index (PI), modified Sulcus Bleeding Index (mSBI) and the Bleeding on Brushing Index (BOB) were measured at baseline, and after 2 (t1) and 4 (t2) weeks. Statistical analysis was performed using the Wilcoxon test and the Mann-Whitney U-test. RESULTS One-hundred and six participants completed the study. The BOB decreased significantly in all groups (P < 0.001) with the most pronounced reduction being recorded for group A (baseline: 49.3 ± 23.0%; 4 weeks: 5.1 ± 6.9%). Also, the mSBI (P < 0.001) decreased significantly in all groups during the study. The API appeared to be less affected by the oral hygiene than other indices. The highest correlation was observed between BOB and mSBI (r = 0.785, P < 0.001). CONCLUSION The BOB is a valuable complement for the existing array of indices in preventive dentistry, and is able to detect potential pathological processes in interproximal spaces. Additionally, this study suggests that interdental hygiene with individually selected brushes is superior to flossing. CLINICAL RELEVANCE With the BOB, gingival inflammation can be demonstrated to patients, which could increase compliance.
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Affiliation(s)
- Tobias Rosenauer
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Constanze Wagenschwanz
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Matthias Kuhn
- Institute for Medical Informatics and Biometry (IMB), Carl Gustav Carus Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Anna Kensche
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Sandra Stiehl
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Christian Hannig
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
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Preussker S, Pöschmann M, Kensche A, Natusch I, Koch R, Klimm W, Hannig C. Three-year prospective clinical performance of a one-step self-etch adhesive and a nanofiller hybrid resin composite in Class V lesions. Am J Dent 2014; 27:73-78. [PMID: 25000664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE This 3-year prospective clinical study evaluated the clinical performance of a one-step self-etching adhesive (Futurabond NR) in combination with a nanohybrid composite (Grandio) for the treatment of different Class V cavities. METHODS 122 restorations were placed in 42 patients (mean age of 54 +/- 13.2 years) evaluated according to modified Ryge-criteria at baseline, 6 months, 1, 2 and 3 years. The lesions comprised 91 Class V non-caries cervical lesions (NCCL) and 31 Class V cavities due to caries or restoration replacement. While carious lesions as well as restoration replacement required preparation of dentin, it was not roughened in case of NCCL. Macro-mechanical retention with undercuts was not used. The statistical analysis was carried out based on Bonferroni adjusted McNemar test (global alpha = 0.05) including the criteria marginal adaptation, color match, surface texture, anatomical form, retention and clinical acceptance and pain. The occurrence of secondary caries, preoperative and postoperative sensitivity was also examined. RESULTS After 3 years of clinical service the restorations showed a significant deterioration of all studied parameters. After 3 years, 65% of the restorations were rated as excellent or acceptable in terms of clinical acceptance, 9% appeared tolerable and 26% were rated as not acceptable which mainly resulted from restoration losses. Within the observed timeframe the retention rate decreased to 75%, which means that 30 out of the 122 restorations were partially or completely lost. There was a difference in the 3-year retention rate of NCCL (71%) and the caries/restoration replacement group (87%) but it was not statistically significant.
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Hannig C, Kirsch J, Al-Ahmad A, Kensche A, Hannig M, Kümmerer K. Do edible oils reduce bacterial colonization of enamel in situ? Clin Oral Investig 2012; 17:649-58. [PMID: 22552590 DOI: 10.1007/s00784-012-0734-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 04/09/2012] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Edible oils are an empiric approach for the prevention of oral diseases. The present in situ study investigated the effect of edible oils on initial bacterial colonization of enamel surfaces. METHODS AND MATERIALS Initial biofilm formation was performed on enamel specimens mounted on maxillary splints and carried by eight subjects. After 1 min of pellicle formation, rinses with safflower oil, olive oil and linseed oil were performed for 10 min. Application of chlorhexidine for 1 min served as positive control. Afterwards, the slabs were carried for 8 h overnight. Samples carried for 8 h without any rinse served as negative controls. The amount of adherent bacteria was determined by DAPI staining (4',6-diamidino-2-phenylindole) and live-dead staining (BacLight). Additionally, determination of colony forming units was performed after desorption of the bacteria. TEM evaluation was carried out after application of the rinses. RESULTS The number of adherent bacteria on control samples was 6.1 ± 8.1 × 10(5)/cm(2) after 8 h (DAPI). Fluorescence microscopic data from DAPI staining and live-dead staining as well as from the determination of CFU revealed no significant effects of rinsing with oils on the amount of adherent bacteria compared to the non-rinsed control samples. However, with chlorhexidine a significant reduction in the number of bacteria by more than 85 % was achieved (DAPI, chlorhexidine: 8.2 ± 17.1 × 10(4)/cm(2)). The ratio of viable to dead bacteria was almost equal (1:1) irrespective of the rinse adopted as recorded with BacLight. TEM indicated accumulation of oil micelles at the pellicle's surface and modification of its ultrastructure. CONCLUSION Rinses with edible oils have no significant impact on the initial pattern and amount of bacterial colonization on enamel over 8 h. CLINICAL RELEVANCE Rinses with edible oils cannot be recommended for efficient reduction of oral biofilm formation.
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Affiliation(s)
- Christian Hannig
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany.
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Hannig C, Wagenschwanz C, Pötschke S, Kümmerer K, Kensche A, Hoth-Hannig W, Hannig M. Effect of Safflower Oil on the Protective Properties of the in situ Formed Salivary Pellicle. Caries Res 2012; 46:496-506. [DOI: 10.1159/000339924] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Accepted: 06/07/2012] [Indexed: 11/19/2022] Open
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