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Dohan Z, Friedlander LT, Cooper PR, Li KC, Ratnayake JT, Mei ML. In Vitro Models Used in the Formation of Root Caries Lesions-A Review of the Literature. Dent J (Basel) 2023; 11:269. [PMID: 38132407 PMCID: PMC10743092 DOI: 10.3390/dj11120269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
The management of root caries remains a challenge for clinicians due to its unique anatomical location and structure. There is increasing interest in utilising artificial root caries lesions to develop new strategies for remineralisation. An ideal protocol has not yet been agreed upon. The aim of this review is to provide a structured overview of previously reported in vitro root caries models. The literature was screened and mined for information mainly on substrate selection, model systems utilised, and variables used in the models. Human roots (60%) were the most frequently used substrates, followed by bovine roots (40%). Chemical models (69%) were the most frequently utilised model systems, followed by microbiological models (27%), to form root caries lesions. Acetate buffer solution (80%), pH 5.0 or above (40%), and a demineralisation time of five days (25%) were the common variables used in the chemical systems, while mono-species biofilm was most frequently used (73%) in microbiological models and Streptococcus mutans was the most common bacterial strain utilised in these models (80%). This review highlights the variability amongst the experimental approaches, discusses the advantages and limitations of these approaches, and emphasises that standardisation of experimental conditions along with sustained research will benefit root caries research.
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Affiliation(s)
| | | | - Paul R. Cooper
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (Z.D.); (L.T.F.); (K.-C.L.); (J.T.R.)
| | | | | | - May L. Mei
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (Z.D.); (L.T.F.); (K.-C.L.); (J.T.R.)
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DEGRAZIA FW, ALTMANN ASP, FERREIRA CJ, ARTHUR RA, LEITUNE VCB, SAMUEL SMW, COLLARES FM. Evaluation of an antibacterial orthodontic adhesive incorporated with niobium-based bioglass: an in situ study. Braz Oral Res 2019; 33:e010. [DOI: 10.1590/1807-3107bor-2019.vol33.0010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 01/09/2019] [Indexed: 11/22/2022] Open
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Eidt G, Andrade CGD, Negrini TDC, Arthur RA. Role of Candida albicans on enamel demineralization and on acidogenic potential of Streptococcus mutans in vitro biofilms. J Appl Oral Sci 2019; 27:e20180593. [DOI: 10.1590/1678-7757-2018-0593] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/17/2018] [Indexed: 12/15/2022] Open
Affiliation(s)
- Gustavo Eidt
- Universidade Federal do Rio Grande do Sul, Brasil
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Zhou Y, Shimada Y, Matin K, Sadr A, Yoshiyama M, Sumi Y, Tagami J. Assessment of root caries under wet and dry conditions using swept-source optical coherence tomography (SS-OCT). Dent Mater J 2018; 37:880-888. [PMID: 29962412 DOI: 10.4012/dmj.2017-273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to compare optical properties of root caries under two observing conditions using swept-source optical coherence tomography (SS-OCT). In vitro and natural root caries were observed by SS-OCT under wet and dry conditions, followed by confocal laser scanning microscope (CLSM) and transverse microradiography (TMR). Signal intensity (SI), distance between SI peaks (SI-distance) and optical lesion depth were obtained from OCT. Lesion depth was measured from CLSM; lesion depth (LDTMR) and mineral loss (ML) were obtained from TMR. In vitro root caries under wet and dry conditions showed different OCT images and SI patterns. Lesion depth of OCT and that of CLSM, SI-distance and LDTMR, LDTMR and ML significantly correlated. Under dry conditions, half natural root caries showed similar OCT images and SI patterns as in vitro root caries. The base of demineralized dentin could be detected more clearly under dry conditions than under wet conditions.
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Affiliation(s)
- Yuan Zhou
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yasushi Shimada
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Khairul Matin
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Endowed Department of International Oral Health Science (affiliated with Department of Translational Research), School of Dental Medicine, Tsurumi University
| | - Alireza Sadr
- Biomimetics Biomaterials Biophotonics Biomechanics & Technology Laboratory, Department of Restorative Dentistry, University of Washington
| | - Masahiro Yoshiyama
- Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Yasunori Sumi
- Division of Oral and Dental Surgery, Department of Advanced Medicine, National Hospital for Geriatric Medicine, National Center for Geriatrics and Gerontology
| | - Junji Tagami
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Dornelles NB, Collares FM, Genari B, de Souza Balbinot G, Samuel SMW, Arthur RA, Visioli F, Guterres SS, Leitune VCB. Influence of the addition of microsphere load amoxicillin in the physical, chemical and biological properties of an experimental endodontic sealer. J Dent 2018; 68:28-33. [DOI: 10.1016/j.jdent.2017.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 01/07/2023] Open
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Cai J, Palamara JEA, Manton DJ, Burrow MF. Status and progress of treatment methods for root caries in the last decade: a literature review. Aust Dent J 2017; 63:34-54. [DOI: 10.1111/adj.12550] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2017] [Indexed: 12/26/2022]
Affiliation(s)
- J Cai
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - JEA Palamara
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - DJ Manton
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - MF Burrow
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
- Faculty of Dentistry; The University of Hong Kong; Hong Kong China
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Rodrigues JA, Sarti CS, Assunção CM, Arthur RA, Lussi A, Diniz MB. Evaluation of laser fluorescence in monitoring non-cavitated caries lesion progression on smooth surfaces in vitro. Lasers Med Sci 2017; 32:1793-1800. [PMID: 28669068 DOI: 10.1007/s10103-017-2262-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/11/2017] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the performance of a pen-type laser fluorescence (LF) device (LFpen: DIAGNOdent pen) to detect and monitor the progression of caries-like lesions on smooth surfaces. Fifty-two bovine enamel blocks were submitted to three different demineralisation cycles for caries-like lesion induction using Streptococcus mutans, Lactobacillus casei and Actinomyces naeslundii. At baseline and after each cycle, the enamel blocks were analysed under Knoop surface micro-hardness (SMH) and an LFpen. One enamel block after each cycle was randomly chosen for Raman spectroscopy analysis. Cross-sectional micro-hardness (CSMH) was performed at different depths (20, 40, 60, 80 and 100 μm) in 26 enamel blocks after the second cycle and 26 enamel blocks after the third cycle. Average values of SMH (± standard deviation (SD)) were 319.3 (± 21.5), 80.5 (± 31.9), 39.8 (± 12.7), and 29.77 (± 10.34) at baseline and after the first, second and third cycles, respectively. Statistical significant difference was found among all periods (p < 0.01). The LFpen values were 4.3 (± 1.5), 7.5 (± 9.4), 7.1 (± 7.1) and 5.10 (± 3.58) at baseline and after the first, second, and third cycles, respectively, among all periods (p < 0.05). The CSMH values after the second and third cycles at 20, 40, 60, 80 and 100 μm were 182.8 (± 69.8), 226.1 (± 79.6), 247.20 (± 69.36), 262.35 (± 66.36) and 268.45 (± 65.49), and for the third cycle were 193.7 (± 73.4), 239.5 (± 81.5), 262.64 (± 82.46), 287.10 (± 78.44) and 284.79 (± 72.63) (n = 24 and 23), respectively. No correlation was observed between the LFpen and SMH values (p > 0.05). One sample of each cycle was characterised through Raman spectroscopy analysis. It can be concluded that LF was effective in detecting the first demineralisation on enamel; however, the method did not show any effect in monitoring lesion progression after three cycles of in vitro demineralisation.
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Affiliation(s)
- J A Rodrigues
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil.
| | - C S Sarti
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - C M Assunção
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - R A Arthur
- Department of Public Health, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - A Lussi
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - M B Diniz
- Department of Pediatric Dentistry, School of Dentistry of Cruzeiro do Sul University - UNICSUL, São Paulo, SP, Brazil
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Yuanhong L, Zhongcheng L, Mengqi L, Daonan S, Shu Z, Shu M. [Effects of Nd: YAG laser irradiation on the root surfaces and adhesion of Streptococcus mutans]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2017; 34:579-583. [PMID: 28318157 DOI: 10.7518/hxkq.2016.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE This study aimed to evaluate the effects of treatment with different powers of Nd: YAG laser irradiation on root surfaces and Streptococcus mutans (S. mutans) adhesion. METHODS Extracted teeth because of severe periodontal disease were divided into the following four groups: control group, laser group 1, laser group 2, and laser group 3. After scaling and root planning, laser group 1, laser group 2, and laser group 3 were separately treated with Nd: YAG laser irradiation (4/6/8 W, 60 s); however, the control group did not receive the treatment. Scanning electron microscopy (SEM) was used to determine the morphology. S. mutans were cultured with root slices from each group. Colony forming unit per mL (CFU·mL⁻¹) was used to count and compare the amounts of bacteria adhesion among groups. SEM was used to observe the difference of bacteria adhesion to root surfaces between control group (scaling) and laser group 2 (6 W, 60 s), thereby indicating the different bacteria adhesions because of different treatments. RESULTS Morphology alterations indicated that root surfaces in control group contain obvious smear layer, debris, and biofilm; whereas the root surfaces in laser group contain more cracks with less smear layer and debris. The bacteria counting indicated that S. mutans adhesion to laser group was weaker than that of control group (P<0.05). No statistical significance among the laser groups (P>0.05) was observed. Morphology alterations also verified that S. mutans adhesion to laser group 2 (6 W, 60 s) was weaker than that of control group (scaling). CONCLUSIONS This study demonstrated that Nd: YAG laser irradiation treatment after scaling can reduce smear layer, debris, and biofilm on the root surfaces as compared with conventional scaling. The laser treatment reduces the adhesion of S. mutans as well. However, Nd: YAG laser irradiation can cause cracks on the root surfaces. In this experiment, the optimum laser power of 6 W can thoroughly remove the smear layer and debris, as well as relatively improve the control of thermal damagee.
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Affiliation(s)
- Li Yuanhong
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Li Zhongcheng
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Luo Mengqi
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shen Daonan
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zhang Shu
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Meng Shu
- State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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ZHOU Y, MATIN K, SHIMADA Y, SUMI Y, TAGAMI J. Evaluation of resin infiltration on demineralized root surface: An in vitro study. Dent Mater J 2017; 36:195-204. [PMID: 28111390 DOI: 10.4012/dmj.2016-229] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuan ZHOU
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Khairul MATIN
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
- Endowed Department of International Oral Health Science (affiliated with Department of Translational Research), School of Dental Medicine, Tsurumi University
| | - Yasushi SHIMADA
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yasunori SUMI
- Division of Oral and Dental Surgery, Department of Advanced Medicine, National Hospital for Geriatric Medicine, National Center for Geriatrics and Gerontology
| | - Junji TAGAMI
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Brittan JL, Sprague SV, Macdonald EL, Love RM, Jenkinson HF, West NX. In vivo model for microbial invasion of tooth root dentinal tubules. J Appl Oral Sci 2016; 24:126-35. [PMID: 27119760 PMCID: PMC4836919 DOI: 10.1590/1678-775720150448] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/21/2016] [Indexed: 02/04/2023] Open
Abstract
Objective Bacterial penetration of dentinal tubules via exposed dentine can lead to root caries and promote infections of the pulp and root canal system. The aim of this work was to develop a new experimental model for studying bacterial invasion of dentinal tubules within the human oral cavity. Material and Methods Sections of human root dentine were mounted into lower oral appliances that were worn by four human subjects for 15 d. Roots were then fixed, sectioned, stained and examined microscopically for evidence of bacterial invasion. Levels of invasion were expressed as Tubule Invasion Factor (TIF). DNA was extracted from root samples, subjected to polymerase chain reaction amplification of 16S rRNA genes, and invading bacteria were identified by comparison of sequences with GenBank database. Results All root dentine samples with patent tubules showed evidence of bacterial cell invasion (TIF value range from 5.7 to 9.0) to depths of 200 mm or more. A spectrum of Gram-positive and Gram-negative cell morphotypes were visualized, and molecular typing identified species of Granulicatella, Streptococcus, Klebsiella, Enterobacter, Acinetobacter, and Pseudomonas as dentinal tubule residents. Conclusion A novel in vivo model is described, which provides for human root dentine to be efficiently infected by oral microorganisms. A range of bacteria were able to initially invade dentinal tubules within exposed dentine. The model will be useful for testing the effectiveness of antiseptics, irrigants, and potential tubule occluding agents in preventing bacterial invasion of dentine.
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Affiliation(s)
- Jane L Brittan
- Department of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
| | - Susan V Sprague
- Department of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
| | - Emma L Macdonald
- Department of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
| | - Robert M Love
- Department of Oral Diagnostic and Surgical Sciences, University of Otago, Dunedin, New Zealand
| | - Howard F Jenkinson
- Department of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
| | - Nicola X West
- Department of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom
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In vitro antibacterial and remineralizing effect of adhesive containing triazine and niobium pentoxide phosphate inverted glass. Clin Oral Investig 2016; 21:93-103. [DOI: 10.1007/s00784-016-1754-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 02/11/2016] [Indexed: 01/31/2023]
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