1
|
da Silva LB, Magno MB, Fonseca-Gonçalves A, Pintor AVB. ART with or without the aid of chemo-mechanical agents: a systematic review. Clin Oral Investig 2024; 28:581. [PMID: 39382720 DOI: 10.1007/s00784-024-05931-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Accepted: 09/14/2024] [Indexed: 10/10/2024]
Abstract
OBJECTIVES To investigate whether the use of chemo-mechanical carious tissue removal (CMCTR) agents is effective for Atraumatic Restorative Treatment (ART). MATERIALS AND METHODS Searches were conducted in 6 databases for inclusion of clinical studies. Risk of bias was assessed (RoB 2 and ROBINS-I), a meta-analysis was performed with data from time of carious tissue removal (TCTR), and the certainty of evidence was estimated. ART + CMCTR was compared to ART for the treatment of caries lesions in primary teeth (pt) and permanent teeth (PT) of humans, considering acceptability, pain/discomfort, survival and success of restorations (SSR), Oral Health-Related Quality of life (OHRQol), satisfaction, TCTR, total treatment time (TTT), carious tissue removal efficacy and adverse effects. RESULTS Of 12 included studies, 4 showed low risk of bias, considering pain, TTT and TCTR outcomes. ART + CMCTR was similar or more accepted than ART for pt, causing similar or less pain/discomfort for both dentitions. There was no difference in SSR, OHRQol for PT, and adverse effects (pt), although greater satisfaction was reported after ART + CMCTR in case of PT. ART + CMCTR was better or as effective as ART in removing carious tissue (pt). TTT for pt was divergent between the groups, but without difference of TCTR for both, pt and PT (MD 0.11 [-1.56, 1.77] p = 0.90, I 2 =93%). CONCLUSIONS In general, ART + CMCTR is effective, providing greater satisfaction, with no difference in SSR, OHRQol and adverse effects compared to ART, which did not present advantages in relation to pain/discomfort and efficacy in removing carious tissue. The TTT was influenced by the CMCTR agent; however, there was no difference for TCTR in the overall quantitative synthesis with Papacárie DuoGel®. CLINICAL RELEVANCE The use of chemo-mechanical agents for carious tissue removal in the ART may benefit patients with reduced pain/discomfort.
Collapse
Affiliation(s)
- Luísa Buoro da Silva
- Professional Master's Degree Program of Dentistry, School of Dentistry, Universidade Federal do Rio de Janeiro (UFRJ), Rua Rodolpho Paulo Rocco, 325, Rio de Janeiro, RJ, 21941-913, Brazil
| | - Marcela Baraúna Magno
- Postgraduation Program of Dentistry, School of Dentistry, Universidade Veiga de Almeida (UVA), Rio de Janeiro, RJ, Brazil
| | - Andréa Fonseca-Gonçalves
- Professional Master's Degree Program of Dentistry, School of Dentistry, Universidade Federal do Rio de Janeiro (UFRJ), Rua Rodolpho Paulo Rocco, 325, Rio de Janeiro, RJ, 21941-913, Brazil
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Andréa Vaz Braga Pintor
- Professional Master's Degree Program of Dentistry, School of Dentistry, Universidade Federal do Rio de Janeiro (UFRJ), Rua Rodolpho Paulo Rocco, 325, Rio de Janeiro, RJ, 21941-913, Brazil.
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
| |
Collapse
|
2
|
Ferdous KU, Tesfay MZ, Cios A, Shelton RS, Hartupee C, Urbaniak A, Chamcheu JC, Mavros MN, Giorgakis E, Mustafa B, Simoes CC, Miousse IR, Basnakian AG, Moaven O, Post SR, Cannon MJ, Kelly T, Nagalo BM. Enhancing Neoadjuvant Virotherapy's Effectiveness by Targeting Stroma to Improve Resectability in Pancreatic Cancer. Biomedicines 2024; 12:1596. [PMID: 39062169 PMCID: PMC11275208 DOI: 10.3390/biomedicines12071596] [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: 06/24/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
About one-fourth of patients with pancreatic ductal adenocarcinoma (PDAC) are categorized as borderline resectable (BR) or locally advanced (LA). Chemotherapy and radiation therapy have not yielded the anticipated outcomes in curing patients with BR/LA PDAC. The surgical resection of these tumors presents challenges owing to the unpredictability of the resection margin, involvement of vasculature with the tumor, the likelihood of occult metastasis, a higher ratio of positive lymph nodes, and the relatively larger size of tumor nodules. Oncolytic virotherapy has shown promising activity in preclinical PDAC models. Unfortunately, the desmoplastic stroma within the PDAC tumor microenvironment establishes a barrier, hindering the infiltration of oncolytic viruses and various therapeutic drugs-such as antibodies, adoptive cell therapy agents, and chemotherapeutic agents-in reaching the tumor site. Recently, a growing emphasis has been placed on targeting major acellular components of tumor stroma, such as hyaluronic acid and collagen, to enhance drug penetration. Oncolytic viruses can be engineered to express proteolytic enzymes that cleave hyaluronic acid and collagen into smaller polypeptides, thereby softening the desmoplastic stroma, ultimately leading to increased viral distribution along with increased oncolysis and subsequent tumor size regression. This approach may offer new possibilities to improve the resectability of patients diagnosed with BR and LA PDAC.
Collapse
Affiliation(s)
- Khandoker Usran Ferdous
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| | - Mulu Z. Tesfay
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| | - Aleksandra Cios
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
| | - Randal S. Shelton
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Conner Hartupee
- Division of Surgical Oncology, Department of Surgery, Louisiana State University (LSU) Health, New Orleans, LA 70112, USA; (C.H.); (O.M.)
| | - Alicja Urbaniak
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (A.U.); (I.R.M.)
| | - Jean Christopher Chamcheu
- Department of Biological Sciences and Chemistry, Southern University and A&M College, Baton Rouge, LA 70813, USA;
- Division of Biotechnology and Molecular Medicine, Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Michail N. Mavros
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
- Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Emmanouil Giorgakis
- Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Bahaa Mustafa
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Camila C. Simoes
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| | - Isabelle R. Miousse
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (A.U.); (I.R.M.)
| | - Alexei G. Basnakian
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
- Central Arkansas Veterans Healthcare System, John L. McClellan Memorial VA Hospital, Little Rock, AR 72205, USA
| | - Omeed Moaven
- Division of Surgical Oncology, Department of Surgery, Louisiana State University (LSU) Health, New Orleans, LA 70112, USA; (C.H.); (O.M.)
- Department of Interdisciplinary Oncology, Louisiana Cancer Research Center, Louisiana State University (LSU) Health, New Orleans, LA 70112, USA
| | - Steven R. Post
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| | - Martin J. Cannon
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Thomas Kelly
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| | - Bolni Marius Nagalo
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.U.F.); (M.Z.T.); (A.C.); (C.C.S.); (S.R.P.); (T.K.)
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (M.N.M.); (M.J.C.)
| |
Collapse
|
3
|
Xiong Y, Li S, Zhang Y, Chen Q, Xing M, Zhang Y, Wang Q. MechanoBase: a comprehensive database for the mechanics of tissues and cells. Database (Oxford) 2024; 2024:baae040. [PMID: 38805752 PMCID: PMC11131424 DOI: 10.1093/database/baae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/16/2024] [Accepted: 05/13/2024] [Indexed: 05/30/2024]
Abstract
Mechanical aspects of tissues and cells critically influence a myriad of biological processes and can substantially alter the course of diverse diseases. The emergence of diverse methodologies adapted from physical science now permits the precise quantification of the cellular forces and the mechanical properties of tissues and cells. Despite the rising interest in tissue and cellular mechanics across fields like biology, bioengineering and medicine, there remains a noticeable absence of a comprehensive and readily accessible repository of this pertinent information. To fill this gap, we present MechanoBase, a comprehensive tissue and cellular mechanics database, curating 57 480 records from 5634 PubMed articles. The records archived in MechanoBase encompass a range of mechanical properties and forces, such as modulus and tractions, which have been measured utilizing various technical approaches. These measurements span hundreds of biosamples across more than 400 species studied under diverse conditions. Aiming for broad applicability, we design MechanoBase with user-friendly search, browsing and data download features, making it a versatile tool for exploring biomechanical attributes in various biological contexts. Moreover, we add complementary resources, including the principles of popular techniques, the concepts of mechanobiology terms and the cellular and tissue-level expression of related genes, offering scientists unprecedented access to a wealth of knowledge in this field of research. Database URL: https://zhanglab-web.tongji.edu.cn/mechanobase/ and https://compbio-zhanglab.org/mechanobase/.
Collapse
Affiliation(s)
- Yanhong Xiong
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Shiyu Li
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Yuxuan Zhang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Qianqian Chen
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Mengtan Xing
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Yong Zhang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| | - Qi Wang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Frontier Science Center for Stem Cell Research, Tongji University, Shanghai 200092, China
| |
Collapse
|
4
|
Al-Badri H, Al-Shammaree SA, Banerjee A, Al-Taee LA. The in-vitro development of novel enzyme-based chemo-mechanical caries removal agents. J Dent 2023; 138:104714. [PMID: 37734529 DOI: 10.1016/j.jdent.2023.104714] [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: 07/25/2023] [Revised: 09/09/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023] Open
Abstract
OBJECTIVES Bromelain is a potent proteolytic enzyme that has a unique functionality makes it valuable for various therapeutic purposes. This study aimed to develop three novel formulations based on bromelain to be used as chemomechanical caries removal agents. METHODS The novel agents were prepared using different concentrations of bromelain (10-40 wt. %), with and without 0.1-0.3 wt. % chloramine T or 0.5-1.5 wt. % chlorhexidine (CHX). Based on the enzymatic activity test, three formulations were selected; 30 % bromelain (F1), 30 % bromelain-0.1 % chloramine (F2) and 30 % bromelain-1.5 % CHX (F3). The assessments included molecular docking, Fourier-transform infrared spectroscopy (FTIR), viscosity and pH measurements. The efficiency of caries removal was assessed by DIAGNOdent pen, measuring the excavation time and number of applications, followed by a morphological evaluation of the remaining dentine using scanning electron microscopy (SEM). The results were compared to Brix 3000 as a control. RESULTS The chloramine and chlorhexidine were chemically compatible with bromelain without compromising the enzyme activity. All experimental formulations showed higher viscosity and pH in comparison to Brix 3000. The DIAGNOdent readings were <20 in all groups, and the lowest readings were observed in F2. The excavation time and number of applications were lowest in F2 and F1. Both F2 and F3 produced smooth dentine surfaces with less tissue debris, but more patent dentine tubules were observed in F1 and F2. CONCLUSIONS The bromelain-contained formulations showed a potential to be used as chemomechanical caries removal agents in vitro. Further laboratory and clinical studies are needed to validate this claim. CLINICAL SIGNIFICANCE The bromelain from pineapple stem has broad specificity for cleavage the peptide bonds in denatured protein to facilitate their removal. The study proved the efficiency of this enzyme to remove the dental caries chemomechanically when used alone or conjugated with chloramine and/or chlorhexidine to enhance the disinfecting and cleansing properties.
Collapse
Affiliation(s)
- Huda Al-Badri
- Department of Conservative and Aesthetic Dentistry, Baghdad College of Dentistry, University of Baghdad, Baghdad, Iraq
| | | | - Avijit Banerjee
- Centre for Oral Clinical & Translational Sciences, King's College London, Guy's Hospital, London, UK
| | - Lamis A Al-Taee
- Department of Conservative and Aesthetic Dentistry, Baghdad College of Dentistry, University of Baghdad, Baghdad, Iraq.
| |
Collapse
|
5
|
Jacob SE, Prasad N, Dutta S, Kumblekar V, Natarajan S, Jayaprakash K, Thomas MS. Effects of traditional and novel proteolytic agents on tissue dissolution and dentine microhardness. AUST ENDOD J 2023; 49:287-294. [PMID: 35950879 DOI: 10.1111/aej.12674] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/21/2022] [Accepted: 07/28/2022] [Indexed: 01/20/2023]
Abstract
The study aimed to evaluate the tissue-dissolving ability of papain and bromelain with respect to that of sodium hypochlorite (NaOCl) at the temperatures of 25°C and 60°C. The study also assessed the effects of these proteolytic agents on radicular dentine microhardness. Warming NaOCl, papain and bromelain solutions resulted in significant tissue dissolution at all time intervals (p < 0.001). At 60°C, bromelain showed significantly higher tissue weight loss at every time interval when compared to NaOCl (p < 0.001). All of the three organic tissue dissolvents reduced the microhardness at 1 hr when compared to their respective baseline values. The reduction in microhardness from the baseline reading was statistically significant only in the papain group at 30 min (p = 0.018) and at 60 min (p = 0.03) when compared to the control group. Hence it was concluded that bromelain exerted superior tissue dissolution action, especially when warmed, with minimal effect on dentine microhardness.
Collapse
Affiliation(s)
- Shwetha Elizabeth Jacob
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Niharika Prasad
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sreya Dutta
- Manipal Academy of Higher Education, Manipal, Karnataka, India
- Manipal College of Dental Sciences, Mangalore, Karnataka, India
| | - Vasavi Kumblekar
- Manipal Academy of Higher Education, Manipal, Karnataka, India
- Department of Biochemistry, Centre for Basic Sciences, Kasturba Medical College, Mangalore, India
| | - Srikant Natarajan
- Manipal Academy of Higher Education, Manipal, Karnataka, India
- Department of Oral Pathology, Manipal College of Dental Sciences, Mangalore, Karnataka, India
| | - Kukkila Jayaprakash
- Department of Dental Materials, Biomaterials and Research Center, Yenepoya Dental College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Manuel Sebastian Thomas
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| |
Collapse
|
6
|
Bedir F, Telatar GY. Comparison of Different Dentin Deproteinizing Agents on Bond Strength and Microleakage of Universal Adhesive to Dentin. JOURNAL OF ADVANCED ORAL RESEARCH 2023. [DOI: 10.1177/23202068231157998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Aim: To evaluate the effects of papain (Brix 3000), bromelain, sodium hypochlorite (NaOCl), and chlorine dioxide (ClO2) application to the deep dentin surface on shear bond strength (SBS), microleakage, and dentin surface properties. Materials and Methods: Deep dentin surface ( n = 100) for evaluating SBS, class V preparation at the buccal surface for testing microleakage ( n = 100), and deep dentin slices ( n = 20) for evaluating surface properties were conducted on the 220 molar teeth. Four different deproteinizing agents (Brix 3000, 40% bromelain, 5.25% NaOCl (Chloraxid), and 0.12% ClO2) were applied to the dentin, and then the universal adhesive was used in self-etch (SE) and etch&rinse (E&R). Deproteinizing agents were not applied to the control group. All of the samples were subjected to 5000 cycles of thermal aging at 5ºC–55ºC. SBS (MPa) was tested by a universal testing machine. The microleakage of resin composite bonded with different adhesive modes was evaluated under a stereomicroscope. The changes in the surface morphology were examined with scanning electron microscopy (SEM) and attenuated total reflection – fourier transform infrared spectroscopy (ATR-FTIR). Results: ClO2 exhibited the highest bond strength among deproteinizing agents. Compared to the SE mode, E&R mode significantly showed higher bond strength ( p < .05). In gingival margin, bromelain SE exhibited the highest marginal leakage, while Brix 3000 SE had the lowest mean microleakage score. Conclusion: Deproteinizing with ClO2 was effective in improving the SBS of universal adhesive in the E&R mode to deep dentin. Deproteinization with bromelain before universal adhesive in SE mode showed more microleakage on both the occlusal and gingival surfaces.
Collapse
Affiliation(s)
- Fatih Bedir
- Faculty of Dentistry, Department of Restorative Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gül Yıldız Telatar
- Faculty of Dentistry, Department of Restorative Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| |
Collapse
|
7
|
Kusumasari C, Abdou A, Nakajima M, Tagami J. Deproteinization of caries-affected dentin with chemo-mechanical caries removal agents and its effect on dentin bonding with self-etch adhesives. J Dent 2021; 109:103665. [PMID: 33864887 DOI: 10.1016/j.jdent.2021.103665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES To evaluate the micro-tensile bond strength (μTBS) of self-etch adhesives (SEA) to normal and caries-affected dentin after smear layer deproteinization with papain enzyme-based and NaOCl-based chemo-mechanical caries removal agents (CRAs) and to compare their efficacy to a 6 % NaOCl solution. METHODS Forty extracted human molars with occlusal carious lesions were randomly divided into four pretreatment groups: no treatment (control), Papacarie for 60 s, Carisolv for 60 s, and 6 % NaOCl for 15 s. After pretreatment, Universal Bond Quick ER (UBQ, one-step, 1-SEA) or Clearfil SE Bond 2 (CSE, two-step, 2-SEA) was applied to the pre-treated surface, and built-up with resin composite (Clearfil AP-X). The μTBS test was performed after 24 h water storage of the specimens at 37 °C, and the modes of failure were determined under SEM. Deproteinizing effects of the tested agents on smear layer-covered dentin was quantified by changes in the amide:phosphate ratio using attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) analysis. RESULTS On caries-affected dentin the μTBS improved significantly after pretreatment with Papacarie, Carisolv, and 6 % NaOCl with both SEAs (p < 0.05). Papacarie pretreatment significantly improved the μTBS of UBQ on normal dentin compared to NaOCl pretreatment (p < 0.05). ATR-FTIR revealed that all agents significantly decreased the amide:phosphate ratio on the smear layer-covered normal and caries-affected dentin (p < 0.05). CONCLUSIONS Smear layer deproteinizing with papain enzyme-based and NaOCl-based gel CRAs was effective in improving the micro-tensile bond strength of self-etch adhesives to caries-affected dentin. CLINICAL SIGNIFICANCE Smear layer deproteinization with Papacarie (a papain enzyme-based gel) or Carisolv (a NaOCl-based gel) can improve the μTBS to normal and caries-affected dentin bonded with 2-step self-etch adhesives.
Collapse
Affiliation(s)
- Citra Kusumasari
- Department of Conservative Dentistry, Faculty of Dentistry, University of Indonesia, Jakarta, Indonesia; Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ahmed Abdou
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Biomaterials Department, Faculty of Dentistry, Modern University for Technology and Information, Cairo, Egypt.
| | - Masatoshi Nakajima
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
8
|
Grünherz L, Prein C, Winkler T, Kirsch M, Hopfner U, Streichert T, Clausen-Schaumann H, Zustin J, Kirchhof K, Morlock MM, Machens HG, Schilling AF. Osteoidosis leads to altered differentiation and function of osteoclasts. J Cell Mol Med 2020; 24:5665-5674. [PMID: 32283567 PMCID: PMC7214153 DOI: 10.1111/jcmm.15227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 12/14/2022] Open
Abstract
In patients with osteomalacia, a defect in bone mineralization leads to changed characteristics of the bone surface. Considering that the properties of the surrounding matrix influence function and differentiation of cells, we aimed to investigate the effect of osteoidosis on differentiation and function of osteoclasts. Based on osteomalacic bone biopsies, a model for osteoidosis in vitro (OIV) was established. Peripheral blood mononuclear cells were differentiated to osteoclasts on mineralized surfaces (MS) as internal control and on OIV. We observed a significantly reduced number of osteoclasts and surface resorption on OIV. Atomic force microscopy revealed a significant effect of the altered degree of mineralization on surface mechanics and an unmasking of collagen fibres on the surface. Indeed, coating of MS with RGD peptides mimicked the resorption phenotype observed in OIV, suggesting that the altered differentiation of osteoclasts on OIV might be associated with an interaction of the cells with amino acid sequences of unmasked extracellular matrix proteins containing RGD sequences. Transcriptome analysis uncovered a strong significant up‐regulation of transmembrane glycoprotein TROP2 in osteoclastic cultures on OIV. TROP2 expression on OIV was also confirmed on the protein level and found on the bone surface of patients with osteomalacia. Taken together, our results show a direct influence of the mineralization state of the extracellular matrix surface on differentiation and function of osteoclasts on this surface which may be important for the pathophysiology of osteomalacia and other bone disorders with changed ratio of osteoid to bone.
Collapse
Affiliation(s)
- Lisanne Grünherz
- Experimental Plastic Surgery, Clinic for Plastic and Hand Surgery, Technische Universität München, Munich, Germany.,Center for Applied Tissue Engineering and Regenerative Medicine (CANTER), Munich, Germany
| | - Carina Prein
- Center for Applied Tissue Engineering and Regenerative Medicine (CANTER), Munich, Germany.,Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Munich, Germany
| | - Thomas Winkler
- Institute of Biomechanics, Technische Universität Hamburg-Harburg, Hamburg, Germany
| | - Manuela Kirsch
- Experimental Plastic Surgery, Clinic for Plastic and Hand Surgery, Technische Universität München, Munich, Germany
| | - Ursula Hopfner
- Experimental Plastic Surgery, Clinic for Plastic and Hand Surgery, Technische Universität München, Munich, Germany
| | - Thomas Streichert
- Department of Clinical Chemistry, University Hospital of Cologne, Cologne, Germany
| | - Hauke Clausen-Schaumann
- Center for Applied Tissue Engineering and Regenerative Medicine (CANTER), Munich, Germany.,Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Munich, Germany
| | - Jozef Zustin
- Gerhard Domagk Institute of Pathology, University Medical Center Muenster, Muenster, Germany
| | | | - Michael M Morlock
- Institute of Biomechanics, Technische Universität Hamburg-Harburg, Hamburg, Germany
| | - Hans-Günter Machens
- Experimental Plastic Surgery, Clinic for Plastic and Hand Surgery, Technische Universität München, Munich, Germany
| | - Arndt Friedrich Schilling
- Experimental Plastic Surgery, Clinic for Plastic and Hand Surgery, Technische Universität München, Munich, Germany.,Department of Trauma Surgery, Orthopedic Surgery and Plastic Surgery, University Medical Center Göttingen, Göttingen, Germany
| |
Collapse
|
9
|
Kusumasari C, Abdou A, Tichy A, Hatayama T, Hosaka K, Foxton RM, Wada T, Sumi Y, Nakajima M, Tagami J. Effect of smear layer deproteinization with chemo-mechanical caries removal agents on sealing performances of self-etch adhesives. J Dent 2020; 94:103300. [DOI: 10.1016/j.jdent.2020.103300] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 01/27/2023] Open
|
10
|
Khatib MS, Devarasanahalli SV, Aswathanarayana RM, Venkateswara AH, Nadig RR. Microtensile Bond Strength of Composite Resin Following the Use of Bromelain and Papain as Deproteinizing Agents on Etched Dentin: An In Vitro Study. Int J Clin Pediatr Dent 2020; 13:43-47. [PMID: 32581478 PMCID: PMC7299883 DOI: 10.5005/jp-journals-10005-1743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Aim and objectives The aim of this study was to evaluate and compare the deproteinizing effect of sodium hypochlorite, bromelain, and papain on microtensile bond strength of composite resin to etched dentin. Materials and methods Eighty freshly extracted permanent molars were wet grounded into a flat surface using a diamond disk to expose the superficial dentinal surface. Teeth were etched with 37% phosphoric acid for 15 seconds and rinsed with water and blot dried. Teeth were divided into four groups (n = 20) based on the method of dentin deproteinization. Group I: only etching; group II: deproteinized with 5.25% sodium hypochlorite for 1 minute; group III: deproteinized with 8% bromelain enzyme for 1 minute; and group IV: deproteinized with 8% papain enzyme for 1 minute. All the samples were washed off with distilled water to remove deproteinizing agents. Sample surfaces were blot dried and bonding of the dentin surface was performed and restored with light cure bulk fill composite. Samples were stored in distilled water (37°C/24 hours) and thermocycled. Then, the teeth were longitudinally sectioned and individually fixed to a sectioning block using acrylic resin. The block was mounted on hard tissue microtome and sectioned to get one to three slabs of 1 mm thick sections. The beam was then attached to a custom-made jig using screws subjected to the Instron universal testing machine. A tensile load was applied at a crosshead speed of 0.5 mm/minute until the beam fractured. Results Higher mean bond strength was recorded in group IV followed by group III, group II, and group I, respectively. Group III presented a statistically significant highest mean score compared to other study groups with group I and group II (p < 0.001), followed by group IV having significantly higher mean score compared to group I and group II (p < 0.001) and finally a significant difference was observed between group II and group I (p < 0.001). However, the mean microtensile bond strength score did not differ significantly between group III and group IV (p = 0.20). Conclusion Within the limitations of this present in vitro study, the following conclusions were drawn. The microtensile bond strength of dentine tested in various deproteinizing agents is as follows: 8% bromelain > 8% papain > 5.25% NaOCl > control group. Naturally occurring deproteinizing agents, such as bromelain and papain, used in this study have resulted in greater bond strength values when compared to that of traditionally used chemical agent such as NaOCl. How to cite this article Khatib MS, Devarasanahalli SV, Aswathanarayana RM, et al. Microtensile Bond Strength of Composite Resin Following the Use of Bromelain and Papain as Deproteinizing Agents on Etched Dentin: An In Vitro Study. Int J Clin Pediatr Dent 2020;13(1):43–47.
Collapse
Affiliation(s)
- Mohd Sibghatullah Khatib
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences and Hospital, Bengaluru, Karnataka, India
| | - Swapna V Devarasanahalli
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences and Hospital, Bengaluru, Karnataka, India
| | - Ranjini M Aswathanarayana
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences and Hospital, Bengaluru, Karnataka, India
| | - Ashwath H Venkateswara
- Department of Research and Development, The Himalaya Drug Company, Bengaluru, Karnataka, India
| | - Roopa R Nadig
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences and Hospital, Bengaluru, Karnataka, India
| |
Collapse
|
11
|
Abinaya R, Nagar P, Urs P, Janani J, Smitha S. Comparing the Efficacy of Three Minimally Invasive Techniques on Demineralized Dentin in Primary Teeth and Evaluating Its Residual Dentin and Microhardness Levels: An In Vitro Study. Int J Clin Pediatr Dent 2020; 13:585-589. [PMID: 33976479 PMCID: PMC8060933 DOI: 10.5005/jp-journals-10005-1815] [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] [Indexed: 11/23/2022] Open
Abstract
Aim This study aims to compare the caries removal efficacy of three minimally invasive techniques and to analyze qualitatively under stereomicroscopy and quantitatively using Vickers hardness test. Materials and methods Thirty non-carious anterior primary teeth were selected and subjected to demineralization and the same was confirmed using RadioVisioGraphy (RVG). Samples were divided into three groups: Bromelain gel, smart bur, and atraumatic restorative technique (ART). Caries removal was carried out for a time period of 2 minutes. The remaining demineralized dentin was measured using stereomicroscopy. Random dentin blocks were prepared and a microhardness test was conducted. Statistical analysis Data were subjected to statistical analysis by one-way analysis of variance (ANOVA) test. Results Stereomicroscopic analysis revealed bromelain gel and smart burs to be superior to ART. Bromelain gel was found to have comparable microhardness levels as healthy dentin. Statistically significant (p < 0.001) results were obtained. Conclusion In terms of caries removal and microhardness, bromelain gel was highly efficient when compared to other groups. Clinical significance Fear and anxiety of children and parents about conventional drills led to the emerging trends of minimally invasive restorative dentistry. This research indicated the use of bromelain gel and smart bur in the process of caries removal and that bromelain was more efficient when compared to other groups. How to cite this article Abinaya R, Nagar P, Urs Pallavi, et al. Comparing the Efficacy of Three Minimally Invasive Techniques on Demineralized Dentin in Primary Teeth and Evaluating Its Residual Dentin and Microhardness Levels: An In Vitro Study. Int J Clin Pediatr Dent 2020;13(6):585–589.
Collapse
Affiliation(s)
- R Abinaya
- Department of Pedodontics and Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India
| | - Priya Nagar
- Department of Pedodontics and Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India
| | - Pallavi Urs
- Department of Pedodontics and Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India
| | - J Janani
- Department of Pedodontics and Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India
| | - S Smitha
- Department of Pedodontics and Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India
| |
Collapse
|
12
|
Shekhter AB, Balakireva AV, Kuznetsova NV, Vukolova MN, Litvitsky PF, Zamyatnin AA. Collagenolytic Enzymes and their Applications in Biomedicine. Curr Med Chem 2019; 26:487-505. [PMID: 28990520 DOI: 10.2174/0929867324666171006124236] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 09/24/2017] [Accepted: 09/26/2017] [Indexed: 01/31/2023]
Abstract
Nowadays, enzymatic therapy is a very promising line of treatment for many different diseases. There is a group of disorders and conditions, caused by fibrotic and scar processes and associated with the excessive accumulation of collagen that needs to be catabolized to normalize the connective tissue content. The human body normally synthesizes special extracellular enzymes, matrix metalloproteases (MMPs) by itself. These enzymes can cleave components of extracellular matrix (ECM) and different types of collagen and thus maintain the balance of the connective tissue components. MMPs are multifunctional enzymes and are involved in a variety of organism processes. However, under pathological conditions, the function of MMPs is not sufficient, and these enzymes fail to deal with disease. Thus, medical intervention is required. Enzymatic therapy is a very effective way of treating such collagen-associated conditions. It involves the application of exogenous collagenolytic enzymes that catabolize excessive collagen at the affected site and lead to the successful elimination of disease. Such collagenolytic enzymes are synthesized by many organisms: bacteria, animals (especially marine organisms), plants and fungi. The most studied and commercially available are collagenases from Clostridium histolyticum and from the pancreas of the crab Paralithodes camtschatica, due to their ability to effectively hydrolyse human collagen without affecting other tissues, and their wide pH ranges of collagenolytic activity. In the present review, we summarize not only the data concerning existing collagenase-based medications and their applications in different collagen-related diseases and conditions, but we also propose collagenases from different sources for their potential application in enzymatic therapy.
Collapse
Affiliation(s)
- Anatoly B Shekhter
- Sechenov First Moscow State Medical University, Institute for Regenerative Medicine, Trubetskaya Str. 8, Moscow, 119991, Russian Federation
| | - Anastasia V Balakireva
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Trubetskaya Str. 8, Moscow, 119991, Russian Federation
| | - Natalia V Kuznetsova
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Trubetskaya Str. 8, Moscow, 119991, Russian Federation
| | - Marina N Vukolova
- Sechenov First Moscow State Medical University, Department of Pathophysiology, Trubetskaya Str. 8, Moscow, 119991, Russian Federation
| | - Petr F Litvitsky
- Sechenov First Moscow State Medical University, Department of Pathophysiology, Trubetskaya Str. 8, Moscow, 119991, Russian Federation
| | - Andrey A Zamyatnin
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Trubetskaya Str. 8, Moscow, 119991, Russian Federation.,Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow, 119992, Russian Federation
| |
Collapse
|
13
|
Balakireva AV, Kuznetsova NV, Petushkova AI, Savvateeva LV, Zamyatnin AA. Trends and Prospects of Plant Proteases in Therapeutics. Curr Med Chem 2017; 26:465-486. [PMID: 29173148 DOI: 10.2174/0929867325666171123204403] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 09/19/2017] [Accepted: 11/01/2017] [Indexed: 12/13/2022]
Abstract
The main function of proteases in any living organism is the cleavage of proteins resulting in the degradation of damaged, misfolded and potentially harmful proteins and therefore providing the cell with amino acids essential for the synthesis of new proteins. Besides this main function, proteases may play an important role as signal molecules and participate in numerous protein cascades to maintain the vital processes of an organism. Plant proteases are no exception to this rule. Moreover, in contrast to humanencoded enzymes, many plant proteases possess exceptional features such as higher stability, unique substrate specificity and a wide pH range for enzymatic activity. These valuable features make plant-derived proteolytic enzymes suitable for many biomedical applications, and furthermore, the plants can serve as factories for protein production. Plant proteases are already applied in the treatment of several pathological conditions in the human organism. Some of the enzymes possess antitumour, antibacterial and antifungal activity. The collagenolytic activity of plant proteases determines important medical applications such as the healing of wounds and burn debridement. Plant proteases may affect blood coagulation processes and can be applied in the treatment of digestive disorders. The present review summarizes recent advances and possible applications for plant proteases in biomedicine, and proposes further development of plant-derived proteolytic enzymes in the biotechnology and pharmaceutical industries.
Collapse
Affiliation(s)
- Anastasia V Balakireva
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russian Federation
| | - Natalia V Kuznetsova
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russian Federation
| | | | - Lyudmila V Savvateeva
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russian Federation
| | - Andrey A Zamyatnin
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russian Federation.,Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow, 119992, Russian Federation
| |
Collapse
|
14
|
Bertassoni LE. Dentin on the nanoscale: Hierarchical organization, mechanical behavior and bioinspired engineering. Dent Mater 2017; 33:637-649. [PMID: 28416222 PMCID: PMC5481168 DOI: 10.1016/j.dental.2017.03.008] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/09/2017] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Knowledge of the structural organization and mechanical properties of dentin has expanded considerably during the past two decades, especially on a nanometer scale. In this paper, we review the recent literature on the nanostructural and nanomechanical properties of dentin, with special emphasis in its hierarchical organization. METHODS We give particular attention to the recent literature concerning the structural and mechanical influence of collagen intrafibrillar and extrafibrillar mineral in healthy and remineralized tissues. The multilevel hierarchical structure of collagen, and the participation of non-collagenous proteins and proteoglycans in healthy and diseased dentin are also discussed. Furthermore, we provide a forward-looking perspective of emerging topics in biomaterials sciences, such as bioinspired materials design and fabrication, 3D bioprinting and microfabrication, and briefly discuss recent developments on the emerging field of organs-on-a-chip. RESULTS The existing literature suggests that both the inorganic and organic nanostructural components of the dentin matrix play a critical role in various mechanisms that influence tissue properties. SIGNIFICANCE An in-depth understanding of such nanostructural and nanomechanical mechanisms can have a direct impact in our ability to evaluate and predict the efficacy of dental materials. This knowledge will pave the way for the development of improved dental materials and treatment strategies. CONCLUSIONS Development of future dental materials should take into consideration the intricate hierarchical organization of dentin, and pay particular attention to their complex interaction with the dentin matrix on a nanometer scale.
Collapse
Affiliation(s)
- Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA; Center for Regenerative Medicine, Oregon Health and Science University, School of Medicine, Portland, OR, USA; Department of Biomedical Engineering, Oregon Health and Science University, School of Medicine, Portland, OR, USA.
| |
Collapse
|
15
|
Anwar AS, Kumar RK, Prasad Rao VA, Reddy NV, Reshma VJ. Evaluation of Microhardness of Residual Dentin in Primary Molars Following Caries Removal with Conventional and Chemomechanical Techniques: An In vitro Study. J Pharm Bioallied Sci 2017; 9:S166-S172. [PMID: 29284958 PMCID: PMC5731007 DOI: 10.4103/jpbs.jpbs_148_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Many patients consider removal of caries to be a very unpleasant experience. Removal of caries with conventional drill is considered traumatic mainly due to fear and anxiety of children and their parents. Minimally invasive dentistry adopts a philosophy that integrates prevention, remineralization, and minimal intervention for the placement and replacement of restorations, thus reaching the treatment objective using the least invasive surgical approach, with the removal of the minimal amount of healthy tissues. Chemomechanical caries removal (CMCR) is a method for minimally invasive, gentle dentin caries removal based on biological principles which is an effective alternative to the traditional method. The present study was done to compare the microhardness of sound dentin before and after carious removal using a chemomechanical method and a conventional method. Materials and Methods: The present in vitro study was done on 28 proximal surfaces of fourteen extracted primary molars (with active caries on one proximal surface and sound side as control). The study was done to assess the Knoop microhardness of remaining dentinal surface after caries removal using a slow speed conventional bur and a chemomechanical method (Carie-Care™). Results and Conclusion: The rotary instrument group showed a consistent microhardness value with not much difference according to depth. The chemomechanical group showed a lesser microhardness value closer to the cavity floor than away from it. The microhardness values at all depths were significantly different for each treatment group with an increased value seen in the rotary group. The mean microhardness values of residual dentin in treated side were found to be insignificant when compared among each interval in each group. The microhardness of sound dentin had high significant difference from that of residual dentin in both the rotary group and the chemomechanical group.
Collapse
Affiliation(s)
- A Shihab Anwar
- Specialist-Pedodontist, Ram Dental Clinic and Orthodontic Centre, Dammam, Saudi Arabia
| | - R Krishna Kumar
- Department of Pedodontics and Preventive Dentistry, Rajah Muthiah Dental College and Hospital, Annamalai University, Chidambaram, Tamil Nadu, India
| | - V Arun Prasad Rao
- Department of Pedodontics and Preventive Dentistry, Mahatma Gandhi Post Graduate Institute of Dental Sciences, Puducherry, Telangana, India
| | - N Venugopal Reddy
- Department of Pedodontics and Preventive Dentistry, Mamta Dental College and Hospital, Khammam, Telangana, India
| | - V J Reshma
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| |
Collapse
|
16
|
The role of proteoglycans in the nanoindentation creep behavior of human dentin. J Mech Behav Biomed Mater 2015; 55:264-270. [PMID: 26600409 DOI: 10.1016/j.jmbbm.2015.10.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/29/2015] [Accepted: 10/24/2015] [Indexed: 11/20/2022]
Abstract
Attempts to understand the mechanical behavior of dentin and other mineralized tissues have been primarily focused on the role of their more abundant matrix components, such as collagen and hydroxyapatite. The structural mechanisms endowing these biological materials with outstanding load bearing properties, however, remain elusive to date. Furthermore, while their response to deformation has been extensively studied, mechanisms contributing to their recovery from induced deformation remain poorly described in the literature. Here, we offer novel insights into the participation of proteoglycans (PG) and glycosaminoglycans (GAG) in regulating the nanoindentation creep deformation and recovery of mineralized and demineralized dentin. Accordingly, after the enzymatic digestion of either PGs and associated GAGs or only GAGs, the nanoindentation creep deformation of dentin increased significantly, while the relative recovery of both the mineralized and demineralized dentin dropped by 40-70%. In summary, our results suggest that PGs and GAGs may participate in a nanoscale mechanism that contributes significantly to the outstanding durability of dentin and possibly other mineralized tissues of similar composition.
Collapse
|
17
|
Neves AA, Lourenço RA, Alves HD, Lopes RT, Primo LG. Caries-removal effectiveness of a papain-based chemo-mechanical agent: A quantitative micro-CT study. SCANNING 2015; 37:258-264. [PMID: 25809787 DOI: 10.1002/sca.21206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 02/25/2015] [Accepted: 03/10/2015] [Indexed: 06/04/2023]
Abstract
The aim of this study was to access the effectiveness and specificity of a papain-based chemo-mechanical caries-removal agent in providing minimum residual caries after cavity preparation. In order to do it, extracted carious molars were selected and scanned in a micro-CT before and after caries-removal procedures with the papain-based gel. Similar parameters for acquisition and reconstruction of the image stacks were used between the scans. After classification of the dentin substrate based on mineral density intervals and establishment of a carious tissue threshold, volumetric parameters related to effectiveness (mineral density of removed dentin volume and residual dentin tissue) and specificity (relation between carious dentin in removed volume and initial caries) of this caries-removal agent were obtained. In general, removed dentin volume was similar or higher than the initial carious volume, indicating that the method was able to effectively remove dentin tissue. Samples with an almost perfect accuracy in carious dentin removal also showed an increased removal of caries-affected tissue. On the contrary, less or no affected dentin was removed in samples where some carious tissue was left in residual dentin. Mineral density values in residual dentin were always higher or similar to the threshold for mineral density values in carious dentin. In conclusion, the papain-based gel was effective in removing carious dentin up to a conservative in vitro threshold. Lesion characteristics, such as activity and morphology of enamel lesion, may also influence caries-removal properties of the method.
Collapse
Affiliation(s)
- Aline A Neves
- Departamento de Odontopediatria e Ortodontia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Roseane A Lourenço
- Escola de Ciências da Saúde, Universidade do Grande Rio, Duque de Caxias, Rio de Janeiro, Brazil
| | - Haimon D Alves
- Laboratório de Instrumentação Nuclear - COPPE - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo T Lopes
- Laboratório de Instrumentação Nuclear - COPPE - Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laura G Primo
- Departamento de Odontopediatria e Ortodontia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
18
|
Effect of papain-based gel on type I collagen--spectroscopy applied for microstructural analysis. Sci Rep 2015; 5:11448. [PMID: 26101184 PMCID: PMC4477230 DOI: 10.1038/srep11448] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 05/19/2015] [Indexed: 12/02/2022] Open
Abstract
Considering the improvement of biomaterials that facilitate atraumatic restorative techniques in dentistry, a papain-based gel can be used in the chemomechanical removal of decayed dental tissue. However, there is no information regarding the influence of this gel on the structure of sound collagen. The aim of the present study was to investigate the adsorption of a papain-based gel (PapacarieTM) to collagen and determine collagen integrity after treatment. A pilot study was first performed with 10 samples of type I collagen membrane obtained from bovine Achilles deep tendon to compare the influence of hydration (Milli-Q water) on infrared bands of collagen. In a further experiment, 10 samples of type I collagen membrane were used to evaluate the effects of PapacarieTM on the collagen microstructure. All analyses were performed using the attenuated total reflectance technique of Fourier transform infrared (ATR-FTIR). The results demonstrated that the application of PapacarieTM does not lead to the degradation of collagen and this product can be safely used in minimally invasive dentistry. As the integrity of sound collagen is preserved after the application of the papain-based gel, this product is indicated for the selective removal of infected dentin, leaving the affected dentin intact and capable of re-mineralization.
Collapse
|
19
|
Tjäderhane L, Buzalaf MAR, Carrilho M, Chaussain C. Matrix metalloproteinases and other matrix proteinases in relation to cariology: the era of 'dentin degradomics'. Caries Res 2015; 49:193-208. [PMID: 25661522 DOI: 10.1159/000363582] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 05/07/2014] [Indexed: 11/19/2022] Open
Abstract
Dentin organic matrix, with type I collagen as the main component, is exposed after demineralization in dentinal caries, erosion or acidic conditioning during adhesive composite restorative treatment. This exposed matrix is prone to slow hydrolytic degradation by host collagenolytic enzymes, matrix metalloproteinases (MMPs) and cysteine cathepsins. Here we review the recent findings demonstrating that inhibition of salivary or dentin endogenous collagenolytic enzymes may provide preventive means against progression of caries or erosion, just as they have been shown to retain the integrity and improve the longevity of resin composite filling bonding to dentin. This paper also presents the case that the organic matrix in caries-affected dentin may not be preserved as intact as previously considered. In partially demineralized dentin, MMPs and cysteine cathepsins with the ability to cleave off the terminal non-helical ends of collagen molecules (telopeptides) may lead to the gradual loss of intramolecular gap areas. This would seriously compromise the matrix ability for intrafibrillar remineralization, which is considered essential in restoring the dentin's mechanical properties. More detailed data of the enzymes responsible and their detailed function in dentin-destructive conditions may not only help to find new and better preventive means, but better preservation of demineralized dentin collagenous matrix may also facilitate true biological remineralization for the better restoration of tooth structural and mechanical integrity and mechanical properties.
Collapse
Affiliation(s)
- Leo Tjäderhane
- Institute of Dentistry, University of Oulu, Oulu, Finland
| | | | | | | |
Collapse
|
20
|
Hamama H, Yiu C, Burrow M. Current update of chemomechanical caries removal methods. Aust Dent J 2014; 59:446-56; quiz 525. [PMID: 25131424 DOI: 10.1111/adj.12214] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2014] [Indexed: 11/27/2022]
Abstract
Chemomechanical caries removal is an excellent method for minimally invasive caries excavation, and the removal agents are either sodium hypochlorite (NaOCl)- or enzyme-based. The NaOCl-based agents include GK-101, GK-101E (Caridex) and Carisolv, and the enzyme-based agents include Papacarie and the experimental material, Biosolv. This review outlines the changes in chemomechanical caries removal methods and focuses on recently published laboratory and clinical studies. The historical development, mechanism of action, excavation time and biological effects on pulp and dental hard tissues are described. Based on existing evidence, the currently available chemomechanical caries removal methods are viable alternatives to conventional rotary instrument methods. Chemomechanical methods could be extremely useful in very anxious, disabled and paediatric patients. It does seem some of these agents would still benefit from quicker excavation times in order to achieve more universal acceptance. However, as a means of conserving the caries-affected dentine, chemomechanical caries removal is possibly much more successful than conventional rotary instrumentation.
Collapse
Affiliation(s)
- H Hamama
- Faculty of Dentistry, Prince Philip Dental Hospital, University of Hong Kong, Hong Kong SAR, China; Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Egypt
| | | | | |
Collapse
|
21
|
Juntavee A, Peerapattana J, Ratanathongkam A, Nualkaew N, Chatchiwiwattana S, Treesuwan P. The Antibacterial Effects of Apacaries Gel on Streptococcus mutans: An in vitro Study. Int J Clin Pediatr Dent 2014; 7:77-81. [PMID: 25356004 PMCID: PMC4212161 DOI: 10.5005/jp-journals-10005-1241] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 10/14/2013] [Indexed: 12/04/2022] Open
Abstract
Background: New approaches for chemomechanical caries removal require effective materials with antibacterial properties for removal of infected dentin. Apacaries gel is a newly developed material comprised polyphenol from mangosteen extracts and papain mixed in gel preparation. Aim: This study evaluated the antibacterial effects of Apacaries gel on Streptococcus mutans in vitro. Materials and methods: Mangosteen pericarp powder was extracted. The amount of phenolic compounds was determined using the Folin-Ciocalteu method. The time-kill kinetics were investigated. Mangosteen extract and papain were mixed with gel base to develop Apacaries gel. The inhibition zone of the Apacaries gel was determined using agar well diffusion methods. Results: The mangosteen pericarp extract, which contains α-mangostin, was active against S. mutans strain ATCC25175. The time-kill kinetics curve showed that applying 1 mg/ml of mangosteen extract can reduce S. mutans by 50% within approximately 5 seconds; after this reduction, the bacterial count rapidly dropped to 0 within 60 seconds. Using mangosteen extract and papain mixture gel preparation resulted in a larger inhibition zone than using the mangosteen extract gel or papain gel separately. Conclusion: Apacaries gel can effectively inhibit S. mutans strain ATCC25175. Apacaries is capable of S. mutans inhibition better than both mangosteen extract or papain separately. How to cite this article: Juntavee A, Peerapattana J, Ratanathongkam A, Nualkaew N, Chatchiwiwattana S, Treesuwan P. The Antibacterial Effects of Apacaries Gel on Streptococcus mutans: An in vitro Study. Int J Clin Pediatr Dent 2014;7(2):77-81.
Collapse
Affiliation(s)
- Apa Juntavee
- Associate Professor, Department of Pediatric Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Jomjai Peerapattana
- Associate Professor, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen Thailand
| | - Ariya Ratanathongkam
- Associate Professor, Department of Oral Biology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Nartsajee Nualkaew
- Lecturer, Department of Pharmacognosy and Toxicity, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen Thailand
| | - Supaporn Chatchiwiwattana
- Associate Professor, Department of Oral Biology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Panta Treesuwan
- Graduate Student, Department of Pediatric Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
22
|
Zand V, Mokhtari H, Lotfi M, Rahimi S, Sohrabi A, Badamchi Zadeh S, Mojaver Kahnamooie H, Tehranchi P. A scanning electron microscope study on the effect of an experimental irrigation solution on smear layer removal. IRANIAN ENDODONTIC JOURNAL 2014; 9:131-6. [PMID: 24688583 PMCID: PMC3961591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 12/01/2013] [Accepted: 12/14/2013] [Indexed: 11/20/2022]
Abstract
INTRODUCTION The aim of this in vitro study was to evaluate the effect of an experimental irrigation solution, containing two different concentrations of papain, Tween 80, 2% chlorhexidine and EDTA, on removal of the smear layer. METHODS AND MATERIALS Thirty-six single-rooted teeth were divided into two experimental groups (n=12) and two positive and negative control groups of six. The canals were prepared with BioRaCe instruments up to BR7 (60/0.02). In group 1, canals were irrigated with a combination of 1% papain, 17% EDTA, Tween 80 and 2% CHX; in group 2, canals were irrigated with a combination of 0.1% papain, 17% EDTA, Tween 80 and 2% CHX. In group 3 (the negative control), the canal was irrigated with 2.5% NaOCl during instrumentation and at the end of preparation with 1 mL of 17% EDTA was used; in group 4 (positive control), normal saline was used for irrigation. The amount of the remaining smear layer was quantified according to Hulsmann method using scanning electron microscopy (SEM). Data was analyzed by the Kruskal-Wallis and Mann-Whitney tests. RESULTS Two-by-two comparisons of the groups revealed no significant differences in terms of smear layer removal at different canal sections between the negative control group (standard regiment for smear layer removal) and 1% papain groups (P<0.05). CONCLUSION Under the limitations of the present study, combination of 1% papain, EDTA, 2% chlorhexidine and Tween 80 can effectively remove smear layer from canal walls.
Collapse
Affiliation(s)
- Vahid Zand
- Dental and Periodontal Research Center, Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran;
| | - Hadi Mokhtari
- Dental and Periodontal Research Center, Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran; ,Corresponding author: Hadi Mokhtari, Dental and Periodontal Research Center, Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran.
Tel+98-914 3131992
Fax: +98-411 334 6977
E-mail:
| | - Mehrdad Lotfi
- Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran;
| | - Saeed Rahimi
- Dental and Periodontal Research Center, Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran;
| | - Aydin Sohrabi
- Dental and Periodontal Research Center, Department of Orthodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran;
| | - Sina Badamchi Zadeh
- Department of Prosthodontics, Dental School, Hamedan University of Medical Sciences, Hamedan, Iran;
| | - Hanieh Mojaver Kahnamooie
- Department of Endodontics, Faculty of Dentistry, Hamedan University of Medical Sciences, Hamedan, Iran;
| | - Pardis Tehranchi
- Dental and Periodontal Research Center, Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
23
|
Pain during Removal of Carious Lesions in Children: A Randomized Controlled Clinical Trial. Int J Dent 2013; 2013:896381. [PMID: 24363672 PMCID: PMC3865729 DOI: 10.1155/2013/896381] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 09/29/2013] [Accepted: 11/13/2013] [Indexed: 11/18/2022] Open
Abstract
The aim of the present study was to assess pain and the need for anesthesia during chemomechanical caries removal with Papacarie gel and the traditional method (low-speed bur) in pediatric patients. A randomized, controlled, clinical trial with a “split-mouth” design was carried out involving 20 children (10 girls and 10 boys) aged four to seven years. Forty primary teeth (two per child) were randomly allocated to either Group 1 (G1: chemomechanical caries removal with Papacarie gel) or Group 2 (G2: removal of carious dentin with low-speed bur). A face scale was used to classify the sensation of pain during the procedure (1: absence of pain; 2: mild pain; 3: moderate pain; 4: moderately intense pain; 5: intense pain; and 6: extremely intense pain). Statistical analysis of the data was performed using the Wilcoxon-Mann-Whitney (U) test. Pain scores were higher in G2, with statistically significant differences in comparison to G1 (U = 148.0; W = 358.0; P = 0.041). Chemomechanical caries removal with Papacarie provides a lesser degree of pain in comparison to conventional caries removal and does not require the use of local anesthesia. The clinical trial registration number is NCT01811420.
Collapse
|
24
|
Hamama HH, Yiu CKY, Burrow MF, King NM. Chemical, morphological and microhardness changes of dentine after chemomechanical caries removal. Aust Dent J 2013; 58:283-92. [DOI: 10.1111/adj.12093] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2012] [Indexed: 11/27/2022]
Affiliation(s)
- HH Hamama
- Paediatric Dentistry and Orthodontics; Faculty of Dentistry; University of Hong Kong; Hong Kong SAR; China
| | - CKY Yiu
- Paediatric Dentistry and Orthodontics; Faculty of Dentistry; University of Hong Kong; Hong Kong SAR; China
| | - MF Burrow
- Oral Diagnosis and Polyclinics; Faculty of Dentistry; University of Hong Kong; Hong Kong SAR; China
| | - NM King
- Paediatric Dentistry; School of Dentistry; Western Australia; Perth; Western Australia
| |
Collapse
|
25
|
Oliva X, Oliva J, Oliva JD, Prasad HS, Rohrer MD. Osseointegration of Zirconia (Y-TZP) Dental Implants: A Histologic, Histomorphometric and Removal Torque Study in the Hip of Sheep. ACTA ACUST UNITED AC 2013. [DOI: 10.5005/jp-journals-10012-1093] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Mazor Z, Ioannou A, Venkataraman N, Kotsakis G. A Minimally Invasive Sinus Augmentation Technique using a Novel Bone Graft Delivery System. ACTA ACUST UNITED AC 2013. [DOI: 10.5005/jp-journals-10012-1097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
27
|
|
28
|
Mechanical heterogeneity of dentin at different length scales as determined by AFM phase contrast. Micron 2012; 43:1364-71. [PMID: 22575216 DOI: 10.1016/j.micron.2012.03.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 03/22/2012] [Accepted: 03/27/2012] [Indexed: 11/22/2022]
Abstract
In this study we sought to gain insights of the structural and mechanical heterogeneity of dentin at different length scales. We compared four distinct demineralization protocols with respect to their ability to expose the periodic pattern of dentin collagen. Additionally, we analyzed the phase contrast resulting from AFM images obtained in tapping mode to interrogate the viscoelastic behavior and surface adhesion properties of peritubular and intertubular dentin, and partially demineralized dentin collagen fibrils, particularly with respect to their gap and overlap regions. Results demonstrated that all demineralization protocols exposed the gap and overlap zones of dentin collagen fibrils. Phase contrast analyses suggested that the intertubular dentin, where the organic matrix is concentrated, generated a higher phase contrast due a higher contribution of energy dissipation (damping) than the highly mineralized peritubular region. At increasing amplitudes, viscoelasticity appeared to play a more significant contribution to the phase contrast of the images of collagen fibrils. The overlap region yielded a greater phase contrast than the more elastic gap zones. In summary, our results contribute to the perspective that, at different length scales, dentin is constituted of structural features that retain heterogeneous mechanical properties contributing to overall mechanical performance of the tissue. Furthermore, the interpretation of phase contrast from images generated with AFM tapping mode appears to be an effective tool to gain an improved understanding of the structure and property relationship of biological tissues and biomaterials at the micro- and nano-scale.
Collapse
|
29
|
Gundannavar G, Chinni DD, Alampalli RV. Ridge Preservation done Immediately following Extraction using Bovine Bone Graft, Collagen Plug and Collagen Membrane. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
30
|
Agnihotri A, Agnihotri D. Maxillary Sinus Lift Up: An Indirect Approach for Implant Placement in Posterior Maxilla. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
31
|
Jain V, TarunKumar AB. Alveolar Ridge Preservation with β-TCP Graft and Platelet-Rich Fibrin. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
|
33
|
Deepthi BC, Babu CLS, Rohit P, Mallikarjuna DM, Raj RB. Correlation between Gingival Phenotype, Residual Ridge Height and the Schneiderian Membrane. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
34
|
Shayegh S, Semyari H, Shahraki AF, Hakimaneh MR. Implant-retained Mandibular Overdentures: A Comparative Study of Immediate Loading vs Delayed Loading after One Year. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
35
|
|
36
|
Jain A, Chaturvedi R, Pahuja B. Comparative Evaluation of the Efficacy of Calcium Sulfate Bone Grafts in Crystalline and Nano-Crystalline Forms in Fresh Extraction Socket Sites: A Radiographic and Histological Pilot Study. ACTA ACUST UNITED AC 2012. [DOI: 10.5005/jp-journals-10012-1067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
37
|
Marya K, Dua JS, Chawla S, Sonoo PR, Aggarwal A, Singh V. Polyetheretherketone (PEEK) Dental Implants: A Case for Immediate Loading. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
38
|
Amarnath GS, Muddugangadhar BC, Tripathi S, Dikshit S, MS D. Biomaterials for Dental Implants: An Overview. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
39
|
Kämmerer PW, Lehmann KM, Karbach J, Wegener J, Al-Nawas B, Wagner W. Prevalence of Peri-implant Diseases Associated with a Rough-Surface Dental Implant System: 9 Years after Insertion. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
40
|
|
41
|
Kotsakis G, Chrepa V, Katta S. Practical Application of the Newly Introduced Natural Bone Regeneration (NBR) Concept Utilizing Alloplastic Putty. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
42
|
Gonshor A, Saroff SA, Anderegg CR, Joachim FPC, Charon JA, Prasad H, Katta S. Histologic and Clinical Evaluation of a Bioactive Calcium Phosphosilicate Bone Graft Material in Postextraction Alveolar Sockets. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|