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Lee EYN, Sua ZY, Bhatia S, Kohli S, Rossi-Fedele G, Doğramacı EJ, Nagendrababu V. Oral health-related quality of life and perceptions of patients following primary root canal treatment or non-surgical retreatment. AUST ENDOD J 2024. [PMID: 38924249 DOI: 10.1111/aej.12868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/12/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
This retrospective cohort study compared the effect of primary root canal treatment (RCT) with root canal retreatment (Re-RCT) on patient-reported outcomes in Kuala Lumpur, Malaysia. Forty randomly selected adults participated (RCT n = 20; Re-RCT n = 20). The impact their dentition had on the Oral Health Impact Profile-14 (OHIP-14) was assessed by calculating the prevalence of oral health impact, and the severity score. Focus group discussions using a semi-structured guide were arranged through an online meeting platform. Qualitative content analysis identified common themes, and relevant quotes gathered. The impact on OHIP-14 was limited for both RCT and Re-RCT groups with no significant differences in the prevalence of oral health impact. Significant differences were found for functional limitation (RCT higher) and psychological discomfort (Re-RCT higher). Common themes from the discussions include the importance of retaining teeth, the significance of effective communication between clinicians and patients and that the respondents were satisfied with the treatment.
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Affiliation(s)
| | - Zi Yee Sua
- International Medical University, Kuala Lumpur, Malaysia
| | - Shekhar Bhatia
- International Medical University, Kuala Lumpur, Malaysia
- School of Dentistry, The University of Queensland, Brisbane, Queensland, Australia
| | - Shivani Kohli
- International Medical University, Kuala Lumpur, Malaysia
- School of Medicine and Dentistry, Griffith University, Gold Coast Campus, Australia
| | - Giampiero Rossi-Fedele
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Esma J Doğramacı
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Venkateshbabu Nagendrababu
- International Medical University, Kuala Lumpur, Malaysia
- Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
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Farias ZBBMD, Campello CP, da Silveira MMF, Moraes SLD, do Egito Vasconcelos BC, Pellizzer EP. The influence of anxiety on pain perception and its repercussion on endodontic treatment: a systematic review. Clin Oral Investig 2023; 27:5709-5718. [PMID: 37526740 DOI: 10.1007/s00784-023-05181-1] [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: 01/05/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
OBJECTIVE To evaluate the influence of dental anxiety on the perception of pain before and during endodontic treatments. MATERIALS AND METHODS The PRISMA checklist was followed. A search was conducted in Scopus, Medline/PubMed, The Cochrane Library, and Web of Science databases. Based on PECOS criteria, the first outcome was a possible association between pre-operative pain and anxiety. The second outcome was a possible association between intraoperative pain and anxiety. The type of studies was observational. The JBI Critical Appraisal Checklist was used to evaluate the methodological quality of articles. The certainty of the evidence was analyzed using the GRADE approach. RESULTS Four articles were included with a total of 471 patients. Two studies found a positive association between pain and pre-endodontic treatment anxiety. Three studies investigated the relationship between anxiety and intraoperative pain; two identified an extremely significant positive association. One article noted that anxiety influences pain expectancy. The studies were of good quality as assessed by the JBI Critical Appraisal Checklist for cross-sectional studies. However, the certainty of the evidence was considered low and very low. CONCLUSIONS Dental anxiety can be directly associated with pre- and intraoperative pain during endodontic procedures. CLINICAL RELEVANCE It is necessary to identify patients with dental anxiety to employ therapies to bring their anxiety under control, avoiding the increase of endodontic infections, and the postponement and evasion of endodontic treatments.
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Affiliation(s)
- Zilda Betânia Barbosa Medeiros de Farias
- Department of Oral and Maxillofacial Pathology, School of Dentistry, University of Pernambuco (UPE), Rua Arnóbio Marquês, 310 - Santo Amaro, Recife, PE, 50100-130, Brazil
| | - Camilla Porto Campello
- Department of Hebiatrics, Determinants of Health in Adolescence, School of Dentistry, University of Pernambuco (UPE), Recife, Brazil
| | - Márcia Maria Fonseca da Silveira
- Department of Oral and Maxillofacial Pathology, School of Dentistry, University of Pernambuco (UPE), Rua Arnóbio Marquês, 310 - Santo Amaro, Recife, PE, 50100-130, Brazil.
| | | | | | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Dental School of Araçatuba, São Paulo State University (UNESP), José Bonifacio street 1193, Araçatuba, São Paulo, 1605000, Brazil
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Taha NA, Abzaid AM, Khader YS. A randomized controlled clinical trial of pulpotomy vs root canal therapy in mature teeth with irreversible pulpitis: Outcome, quality of life, and patients' satisfaction. J Endod 2023:S0099-2399(23)00210-8. [PMID: 37080387 DOI: 10.1016/j.joen.2023.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/22/2023]
Abstract
INTRODUCTION Vital pulp therapy (VPT)is increasingly practiced as an alternative treatment to root canal therapy (RCT) in teeth with carious pulp exposure. The aim of this study was to compare the outcome, quality of life and patient satisfaction after full pulpotomy and RCT in mature teeth with irrevrsible pulpitis. METHODS Sixty mature permanent molar teeth with carious pulp exposure and a diagnosis of irreversible pulpitis were randomly divided into 2 groups (n=30). The first group was treated with full pulpotomy using Biodentine and the second group was treated with RCT. Pain level was recorded preoperatively and at 1, 2, 3, 5 and 7 days. Clinical and radiographic assessment was done at 6 and 12 months follow up, one case in each group did not attend. Based on the Oral Health Impact Profile questionnaire (OHIP-17) and 7 semantic differential scales, quality of life (QOL) and patients' satisfaction were evaluated and compared statistically. RESULTS Pulpotomy and RCT had comparable success rates (27/29, 93%). Pain levels at day 1 after pulpotomy were significantly lower than after RCT (p=0.037), less patients required analgesics (p=0.028), and pulpotomy provided pain relief in a shorter time compared to RCT. Both treatments improved the OHIP QOL of patients without significant differences (60.29, 64.1% at 1 year). Patients' satisfaction with pulpotomy was higher than RCT in terms of the time involved, intraoperative pain, pleasantness, and cost (p <0.05). CONCLUSIONS Full pulpotomy could be an alternative treatment to RCT in mature teeth with carious pulp exposure and symptomatic irreversible pulpitis, based on the clinical, radiographic success rates and patients' satisfaction.
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Affiliation(s)
- Nessrin A Taha
- Department of Conservative Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.
| | - Alaa M Abzaid
- Department of Conservative Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan
| | - Yousef S Khader
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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Doğramacı EJ, Rossi-Fedele G. Patient-related outcomes and Oral Health-Related Quality of Life in endodontics. Int Endod J 2023; 56 Suppl 2:169-187. [PMID: 36102371 DOI: 10.1111/iej.13830] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 11/30/2022]
Abstract
There is increased interest in outcome measures that complement the classic goal of endodontics, being the prevention and healing of apical periodontitis. Possible outcome measures can be subdivided into patient-centred outcomes (PCOs), encompassing data collected by nonpatients aiming to assess the effectiveness of an intervention and patient-reported outcomes (PROs), which are reported directly by the patient. PROs can be subsequently classed into PRO measures that ascertain patients' view of their symptoms, their functional status, and their health-related quality of life, and patient-reported experience measures that focus on aspects including the humanity of care, patient satisfaction, patient preference and adherence, personal costs, expectation fulfilment, and decision regrets. The present review aims to define various patient-related outcomes and discuss the literature available regarding PCOs and PROs in endodontics. This includes those proposed to assess the effectiveness of endodontic treatment for pulpitis and apical periodontitis for use in the development of European Society of Endodontology S3-level clinical practice guidelines that have been included by all working groups, except for the radiographic assessment of apical periodontitis. Based on limited evidence in the field, it can be summarized that after recall periods of various lengths, endodontic treatment is associated with a high likelihood of tooth survival and limited need for further intervention, including extraction and further restorative procedures. Oral Health-Related Quality of Life (OHRQoL) is likely to improve following the completion of treatment. Nonetheless, the literature assessing the association between OHRQoL and endodontics is hampered by the use of instruments that have not been previously validated. Amongst the remaining outcome measures discussed in the present review, it is worth highlighting that there is only one study assessing exacerbations in teeth with the presence of endodontic pathosis, which suggests a very low incidence of this adverse effect following endodontic treatment. Patients' expectation fulfilment, adherence, and satisfaction are closely inter-related and depend also on various nonclinical factors. Further studies assessing PCOs and PROs, in association with healing and prevention of apical periodontitis, are required to better understand endodontic treatment from the perspective of patients.
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Affiliation(s)
- Esma J Doğramacı
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Giampiero Rossi-Fedele
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
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Kirkevang LL. What does epidemiology tell us about treatment outcomes in endodontics. Int Endod J 2023; 56 Suppl 2:53-61. [PMID: 36254498 DOI: 10.1111/iej.13850] [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: 08/25/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Available information on endodontic treatment outcome derives from clinical studies, of which the main part is observational with no randomization and little or no control of confounding factors. Several sources of bias may hamper the interpretation of results from observational studies if the problems are not addressed properly. OBJECTIVE The purpose of this narrative review is to describe and explain the potential benefits of employing epidemiological methodology when designing, conducting and reporting on observational, clinical outcome studies. DISCUSSION Epidemiology provides methodology that can be used to reduce the impact of several types of problems related to observational studies. These problems concern, external validity, which describes the generalisability of the study findings, and internal validity, which describe data quality parameters, such as selection bias, information bias and confounding. Furthermore reporting of a study should be systematized, and to that use, several checklists have been developed. CONCLUSION It can be concluded that epidemiological methods are important for conducting and interpretation of findings from clinical, observational studies in endodontology.
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Nagendrababu V, Vinothkumar TS, El-Karim I, Rossi-Fedele G, Doğramaci EJ, Dummer PMH, Duncan HF. DENTAL PATIENT-REPORTED OUTCOMES IN ENDODONTICS - A NARRATIVE REVIEW. J Evid Based Dent Pract 2023; 23:101805. [PMID: 36914302 DOI: 10.1016/j.jebdp.2022.101805] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/11/2022] [Accepted: 10/29/2022] [Indexed: 11/16/2022]
Abstract
Recently in oral health care settings, the focus of assessing treatment outcomes has shifted from the perspective of the clinician towards that of the patient. Endodontology is a specialty of dentistry concerned with the prevention and treatment of pulp and periapical diseases. Research in endodontology and its associated treatment outcomes have focused mainly on clinician-reported outcomes (CROs) and not dental patient-reported outcomes (dPROs). As a result, there is a need to emphasize the importance and relevance of dPROs to researchers and clinicians. The aim of this review is to present an overview of dPROs and dPROMs within endodontics in an attempt to create a better understanding of the patient experience, highlight the need to place the patient at the center of treatment, enhance patient care and encourage more research into dPROs. The key dPROs following endodontic treatment include pain, tenderness, tooth function, need for further intervention, adverse effects (exacerbation of symptoms, tooth discoloration) and Oral Health-Related Quality of Life. dPROs are important following endodontic treatment because they assist clinicians and patients when they discuss and select the most appropriate management options, help clinicians make decisions on pre-operative assessment, prevention and treatment, and improve the methodology and design of future clinical studies. Clinicians and researchers in endodontology should prioritize patient welfare and undertake routine analyses of dPROs using appropriate and robust measures. Due to the lack of agreement over the reporting and definition of endodontic treatment outcomes, a comprehensive project to define a ``Core Outcome Set for Endodontic Treatment Methods (COSET)'' is currently ongoing. In the future, a new and exclusive assessment tool should be developed to reflect the viewpoints of patients receiving endodontic treatment more accurately.
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Affiliation(s)
- Venkateshbabu Nagendrababu
- Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE.
| | - Thilla Sekar Vinothkumar
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia; Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - Ikhlas El-Karim
- School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | | | - Esma J Doğramaci
- Adelaide Dental School, University of Adelaide, Adelaide, Australia
| | - Paul M H Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, United Kingdom
| | - Henry F Duncan
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
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Sanz E, Azabal M, Arias A. Quality of life and satisfaction of patients two years after endodontic and dental implant treatments performed by experienced practitioners. J Dent 2022; 125:104280. [PMID: 36075535 DOI: 10.1016/j.jdent.2022.104280] [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: 07/22/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 10/14/2022] Open
Abstract
OBJECTIVES To compare oral health related quality of life (OHRQoL) and patients´ satisfaction with root canal treatment (RCT) and dental implant (DI) therapy performed by experienced practitioners. METHODS Patients with both an RCT and a DI performed respectively by an endodontist and an oral surgeon with more than 15 years of experience two years prior to the study were included. The survival and satisfactory outcome of both treatments were verified with clinical and radiographic data. Participants completed two constructed questionnaire (one for each treatment). OHRQoL assessment included 24 items (OHIP-14 plus other relevant 10 items from the original OHIP-49 questionnaire). Satisfaction regarding duration, cost and pain (both during and after treatment) of treatment was assessed with a 0-10 scale and perceptions with true/false questions. Weighted sums for each dimension, total OHIP scores, prevalence of impact and general satisfaction of patients were then calculated for DI and RCT and compared using the Wilcoxon test for related samples. Patients´ perceptions were compared with Chi-square test. RESULTS Total OHIP scores were low for both treatments (8.82 and 7.87, respectively for RCT and DI). No significant differences were detected in OHIP total score or any dimension, except for physical pain (significantly higher for RCT than DI (p=0.044)). All patients were satisfied with both treatments; however, patients recalled that pain during treatment was significantly worse for RCT than DI (p=0.003). CONCLUSIONS High long-term OHRQoL and satisfaction is expected with either DI or RCT performed by experienced practitioners; however, physical pain dimension is higher for RCT. CLINICAL SIGNIFICANCE This study demonstrated a high satisfaction and long-term quality of life of patients undergoing both DI and RCT if treatments provide a functional balance and are performed by experienced practitioners. Very importantly, all participants had received both treatment modalities and being their own control eliminates individual variability.
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Affiliation(s)
- Elena Sanz
- Department of Conservative and Prosthetic Dentistry, School of Dentistry, Complutense University, Plaza Ramon y Cajal s/n. Ciudad Universitaria., Madrid 28040, Spain
| | - Magdalena Azabal
- Department of Conservative and Prosthetic Dentistry, School of Dentistry, Complutense University, Plaza Ramon y Cajal s/n. Ciudad Universitaria., Madrid 28040, Spain
| | - Ana Arias
- Department of Conservative and Prosthetic Dentistry, School of Dentistry, Complutense University, Plaza Ramon y Cajal s/n. Ciudad Universitaria., Madrid 28040, Spain.
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PROMs Following Root Canal Treatment and Surgical Endodontic Treatment. Int Dent J 2022; 73:28-41. [PMID: 35871899 PMCID: PMC9875275 DOI: 10.1016/j.identj.2022.06.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 01/29/2023] Open
Abstract
The FDI is currently working on developing a tool to encompass patient-reported outcome measures (PROMs) within the overall assessment of outcomes of endodontic treatment. The outcome of endodontic treatment has traditionally been determined by various clinical and radiographic criteria. However, these parameters do not address the impact of treatment on a patient's oral health-related quality of life (OHRQoL). OHRQoL, a crucial PROM, can be used to understand treatment outcome from a patient-centred perspective, thus improving clinician-patient communication whilst guiding decision-making. This focussed review aims to recount the OHRQoL of patients following nonsurgical root canal treatment and surgical endodontic treatment, with a specific focus on the minimal important difference (MID; the minimum score changes of an outcome instrument for a patient to register a clinically significant change in their OHRQoL and/or oral condition) and the methods used to determine it. The current evidence indicates that the OHRQoL of patients requiring root canal treatment is poorer than those without such need. Accordingly, the literature suggests that OHRQoL improves following nonsurgical or surgical endodontic treatment. However, study methodologies vary widely, and conclusions cannot be drawn with high confidence, nor can MID recommendations be provided. Well-designed clinical studies with baseline measurements and appropriate follow-up time frames are therefore needed. Despite that the literature is rife with outcome studies, research on PROMs is an area that deserves greater attention, particularly in relation to the MID. Determining the MID will facilitate the understanding of changes in outcome scores from the patients' perspective, thus allowing for more informed decision-making in clinical practice.
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Fenton C, Lee A. Manage endodontic pain with a combination of analgesics, including non-steroidal anti-inflammatory drugs. DRUGS & THERAPY PERSPECTIVES 2022. [DOI: 10.1007/s40267-022-00898-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khoo ST, Lopez V, Ode W, Yu VSH, Lui JN. Psycho-social perspectives of nonsurgical versus surgical endodontic interventions in persistent endodontic disease. Int Endod J 2022; 55:467-479. [PMID: 35141909 DOI: 10.1111/iej.13691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Patients' experiences related to dental treatment could influence care-seeking behaviour and engender personal bias. Although endodontic retreatment and apical surgery are procedures often performed to manage previously treated teeth with persistent disease, there is lack of information regarding psycho-social perspectives of patients who undergo these treatments. Our aim was to compare experiences of patients who received these two treatment modalities using a qualitative approach. METHODS A purposive sample of patients was taken from our previous study utilizing the Oral Health Impact Profile to compare oral health-related quality of life of 150 patients who received retreatment and apical surgery. Patients who reported impact and no impact were invited to participate in focus group discussions (FGDs). Eighteen patients from the retreatment group and 15 patients from the surgical group participated in six FGDs. Thematic analysis was conducted to identify key themes. RESULTS Four themes emerged: (1) psycho-social disability associated with dental procedures, (2) physical disability associated with dental problems, (3) reliance on dentist's advice for treatment and (4) self-management to preserve treated teeth. Patients undergoing endodontic retreatment reported significant time loss from work and were less informed of alternative treatment options. However, they were pleased with the aesthetics of their teeth, especially if new crowns were made. Patients undergoing surgery experienced anxiety related to loss of control during surgery and apprehension on visualizing the wound post-surgery. They reported more impact on their diet, social interaction and sleep quality and some felt self-conscious due to post-treatment gingival recession. Patients in both groups placed great trust in professional advice and expressed a clear desire to maintain their natural dentition. There was low awareness regarding long-term care and future sequelae of their treated tooth. CONCLUSIONS Patients reported different psycho-social and physical impacts following endodontic retreatment and apical surgery. Patients undergoing endodontic retreatment were more satisfied with aesthetic outcomes but experienced greater impact related to complexities and length of time taken for treatment. Patients undergoing surgery were better informed of treatment options but experienced greater physical and psycho-social disability during the recovery phase. Clinicians could consider incorporating findings from this study into the patient-dentist discussion.
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Affiliation(s)
- Shi Tien Khoo
- Department of Restorative Dentistry, National Dental Centre Singapore, Singapore, Singapore
| | - Violeta Lopez
- School of Nursing, Midwifery and Social Sciences, Central Queensland University, Rockhampton, Queensland, Australia
| | - Wataru Ode
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | | | - Jeen-Nee Lui
- Department of Restorative Dentistry, National Dental Centre Singapore, Singapore, Singapore
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Santos-Puerta N, Peñacoba-Puente C. Pain and Avoidance during and after Endodontic Therapy: The Role of Pain Anticipation and Self-Efficacy. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031399. [PMID: 35162422 PMCID: PMC8834740 DOI: 10.3390/ijerph19031399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/31/2021] [Accepted: 01/20/2022] [Indexed: 11/29/2022]
Abstract
Background: Pain anticipation has been identified as a predictor of pain and avoidance with respect to endodontic therapy. Self-efficacy is also key to the development and maintenance of health behaviors and achieve patient adherence to treatment. However, the role of self-efficacy has not been studied yet in endodontic treatment. Methods: This study was conducted on 101 patients who needed root canal therapy. They had to fill a questionnaire before treatment registered pain anticipation and self-efficacy; during and after treatment were registered pain intensity and avoidance. Results: Pain anticipation explained pain during (Beta = 0.51, t = 5.82, p ≤ 0.001, [0.34, 0.69]) and after treatment (Beta = 0.38, t = 4.35, p ≤ 0.001, [0.21, 0.55]). Self-efficacy did not have an influence in pain values. Pain anticipation explained avoidance during (Beta = 0.51, t = 3.60, p ≤ 0.001, [0.23, 0.80]) and after treatment (Beta = 0.62, t = 4.29, p ≤ 0.001, [0.33, 0.91]). Self-efficacy had a significant role in avoidance during treatment (Beta = 0.12, t = 2.19, p ≤ 0.03, [0.01, 0.23]) with a strong moderation relationship between pain anticipation and avoidance when self-efficacy was medium (Beta = 0.44, t = 3.24, p = 0.002, [0.17, 0.72]) or high (Beta = 0.84, t = 3.5, p ≤ 0.001, [0.37, 1.33]). Self-efficacy was not significant respect to avoidance after treatment. Conclusions: Self-efficacy is an important variable in endodontic therapy due to their moderating effect between pain anticipation and avoidance behavior during the procedure. It is necessary to improve the results of root canal therapy and reduce patient’s avoidance in order to take into account this variable.
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Affiliation(s)
- Noelia Santos-Puerta
- Ph.D Program for Health Science, Rey Juan Carlos Doctoral College, C/Quintana, 2, 28008 Madrid, Spain;
| | - Cecilia Peñacoba-Puente
- Department of Psychology, Rey Juan Carlos University, Avda. Atenas s/n, Alcorcón, 28922 Madrid, Spain
- Correspondence: ; Tel.: +34-4888-864
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Shaik RP, Chukka RS, Bandlapally A, Vemuri S, Bolla N, Basam RC, Tammineedi S. Assessment of postoperative pain after single-visit root canal treatment using rotary and reciprocating file systems: an in vivo study. J Dent Anesth Pain Med 2022; 22:267-275. [PMID: 35991361 PMCID: PMC9358273 DOI: 10.17245/jdapm.2022.22.4.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/28/2022] [Accepted: 07/08/2022] [Indexed: 11/26/2022] Open
Abstract
Background Various instrument kinematics used in single-visit endodontics influence the occurrence of pain after endodontic therapy. This study aimed to evaluate the occurrence of pain after mechanical instrumentation with Hyflex EDM (HEDM) and WaveOne Gold (WOG) during single-visit endodontic therapy. Methods Sixty patients diagnosed with asymptomatic irreversible pulpitis and normal apical tissues in mandibular premolar teeth were included in the study for single-visit root canal therapy. The patients were divided into two groups (n = 30) according to the rotary instrument used during root canal preparation (group A [HEDM] and group B [WOG]). Pain was evaluated after endodontic therapy at 8, 24, and 48 h intervals using the visual analog scale (VAS). Data obtained were analyzed using the chi-square test, independent t-test, MannWhitney U test, and Wilcoxon matched-pairs test. Results Statistically significant differences were observed between the two groups (P < 0.001) at 8, 24, and 48 h, with WOG exhibiting less pain than HEDM files. Conclusion Postoperative pain was lower in the WOG file system than in the HEDM file system after single-visit root canal therapy at 8, 24, and 48 h.
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Affiliation(s)
- Reshma Parveen Shaik
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Ram Sunil Chukka
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Anila Bandlapally
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Sayesh Vemuri
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Nagesh Bolla
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Ram Chowdary Basam
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Sravanthi Tammineedi
- Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
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Abstract
Pain associated with infections of the tooth pulp and periapical tissues is intense and often the most common reason for patients seeking emergency dental care. Effective management of acute dental pain requires a deep understanding of pain mechanisms, which enables accurate diagnosis and definitive treatment. While drugs are only used as an adjunct to definitive dental treatment, a thorough understanding of their mechanism of action and effectiveness enables clinicians to effectively control intra-operative and post-operative pain and prevent persistent pain. This review describes how pain is detected, processed, and perceived. It also provides information on evidence-based strategies on the use of different classes of drugs to effectively manage endodontic pain.
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Affiliation(s)
- Asma A Khan
- Department of Endodontics, University of Texas Health at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
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Jang YE, Kim Y, Kim BS. Influence of Preoperative Mechanical Allodynia on Predicting Postoperative Pain after Root Canal Treatment: A Prospective Clinical Study. J Endod 2021; 47:770-778.e1. [PMID: 33516824 DOI: 10.1016/j.joen.2021.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 01/04/2021] [Accepted: 01/15/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Odontogenic pain can manifest as pulpal pain, periapical pain (mechanical allodynia), or both. This study aimed to assess the changes in the intensity of mechanical allodynia (MA) and to identify predictors of postoperative pain after root canal treatment (RCT). METHODS In total, 579 consecutive patients who required RCT were enrolled; we included patients with asymptomatic pulpal diagnoses to avoid any effects of preoperative spontaneous pain on postoperative pain and to evaluate MA independently. Using a visual analog scale (VAS), patients separately indicated the intensity of spontaneous pain, tenderness to percussion, and pain on biting; these measurements were performed before treatment (preoperative pain), at the beginning of each visit (postpreparation pain), and daily for 1 week after RCT (postobturation pain). For analytical purposes, patients were subdivided into 2 groups based on the intensity of preoperative MA (none to mild [VAS <4] or moderate to severe [VAS ≥4]) to evaluate changes in MA and predictive factors of moderate to severe postoperative pain. A generalized estimating equation, repeated-measures analysis of variance, and logistic regression analysis were used. RESULTS Although the intensity of MA was significantly higher in the moderate to severe group after the initiation of RCT (P < .05), 93% of them experienced alleviation in MA, and 30% of patients in the none to mild group experienced an increase in MA. After adjusting for clinical variables, moderate to severe preoperative MA and the presence of necrotic pulp were significantly correlated with moderate to severe postoperative pain with an odds ratio of 4.107 and 0.286, respectively. CONCLUSIONS Moderate to severe preoperative MA was a predictive factor of postoperative pain in patients undergoing RCT.
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Affiliation(s)
- Young-Eun Jang
- Department of Conservative Dentistry, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Yemi Kim
- Department of Conservative Dentistry, College of Medicine, Ewha Womans University, Seoul, Korea.
| | - Bom Sahn Kim
- Department of Nuclear Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
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Suresh N, Nagendrababu V, Koteeswaran V, Haritha JS, Swetha SD, Varghese A, Natanasabapathy V. Effect of preoperative oral administration of steroids in comparison to an anti-inflammatory drug on postoperative pain following single-visit root canal treatment - a double-blind, randomized clinical trial. Int Endod J 2020; 54:198-209. [PMID: 32976660 DOI: 10.1111/iej.13416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/04/2020] [Accepted: 09/17/2020] [Indexed: 01/01/2023]
Abstract
AIM This randomized, double-blinded, clinical trial evaluated the effect of oral premedication of piroxicam, prednisolone, dexamethasone or placebo on postoperative pain after single-visit root canal treatment in teeth with symptomatic irreversible pulpitis and symptomatic apical periodontitis. METHODOLOGY The trial is reported according to the Preferred Reporting Items for RAndomized Trials in Endodontics (PRIRATE) 2020 guidelines. The protocol was registered at the clinical trial registry (India) (CTRI/2019/06/019818). In total, 160 patients, assigned to four groups, received orally either 20 mg piroxicam, 20 mg prednisolone, 4 mg dexamethasone or a placebo 60 min before root canal treatment. Patients recorded their postoperative pain intensity at 6, 12, 24, 48 and 72 h using a 10-cm visual analogue scale. Intergroup comparison was performed using Kruskal-Wallis tests with post hoc analysis using Dunns test. Incidence of pain was analysed using chi-square tests. A P value < 0.05 was considered to be statistically significant. Binary logistic regression was used to determine the odds of postoperative pain, with incidence of pain as the dependent variable and intervention groups, gender, age and type of tooth as independent variables. RESULTS In total, 156 patients were analysed in the trial, since four patients dropped out during follow-up. All drugs were associated with a significantly lower incidence of postoperative pain compared to the placebo at 6 h (P = 0.009), 12 h (P = 0.003) and 24 h (P = 0.008). Mean intensity of pain was significantly more intense at 6, 12 and 24 h with the use of placebo in comparison to the other three intervention groups (P < 0.05). Intensity of pain was not significantly different between the premedications used (P > 0.05). One patient in the piroxicam group reported gastritis, whereas no adverse effects were recorded in other groups. CONCLUSION Preoperative oral administration of a single dose of 4 mg dexamethasone, 20 mg piroxicam or 20 mg prednisolone reduced the incidence and severity of postoperative pain following single-visit root canal treatment compared to a placebo in patients with symptomatic irreversible pulpitis and symptomatic apical periodontitis up to 24 h. The odds of postoperative pain at 24 h for patients premedicated with 4 mg dexamethasone or 20 mg piroxicam or 20 mg prednisolone were 5.3 times, 3.4 times and 2.5 times less compared to the placebo, respectively.
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Affiliation(s)
- N Suresh
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
| | - V Nagendrababu
- Division of Clinical Dentistry, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia.,Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - V Koteeswaran
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
| | - J S Haritha
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
| | - S D Swetha
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
| | - A Varghese
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
| | - V Natanasabapathy
- Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Meenakshi Ammal Dental College, Chennai, India
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Outcome assessment of non-surgical root canal treatment by patients: what factors can influence their evaluation? Br Dent J 2020; 228:762-766. [PMID: 32444749 DOI: 10.1038/s41415-020-1528-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aims This study aims to identify factors considered by patients in assessing their treatment outcome after receiving non-surgical root canal treatments.Methods Participants (n = 225) were requested to complete a questionnaire that asked about the treatment outcome; whether successful, acceptable or failure. Participants were asked about factors related to the procedure, the dentist and the dental practice. Procedure-related factors included: disappearance of pain and/or swelling, gaining biting and chewing ability, absence of complications, post-operative appearance, and influence by practitioner's opinion. Dentist-related factors included: gender, age, appearance, qualifications, reputation, relationship with the patient, clinical handling skills, and social skills. Practice-related factors included: location, tidiness and organisation, equipment and furnishing, and cleanliness and hygiene. Simple cross tabulations of patients' responses and potential associated factors were performed using chi-squared (χ2) tests to analyse the data.Results Disappearance of pain and/or swelling, gaining chewing ability, absence of complications, post-operative appearance, and tidiness and organisation of the clinic were found to be significantly associated with patients' assessment. None of the factors related to the treating dentist were significant.Conclusions Patients may share the same perception about their treatment outcome as their dentists. Absence of symptoms, and gaining normal appearance and function are the main factors that patients consider in their evaluation.
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Neelakantan P, Liu P, Dummer PMH, McGrath C. Oral health-related quality of life (OHRQoL) before and after endodontic treatment: a systematic review. Clin Oral Investig 2019; 24:25-36. [PMID: 31712982 DOI: 10.1007/s00784-019-03076-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 09/13/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVES This systematic review was undertaken to determine the oral health-related quality of life (OHRQoL) before and after endodontic treatment. MATERIALS AND METHODS Based on the PRISMA guidelines, electronic databases (n = 7) were searched and from 1038 citations, 16 papers were included in this review. Information on study design, sample size, intervention/treatment modality, methods of assessing OHRQoL, and the key findings were extracted and analyzed. RESULTS Among the 16 studies, 3 were cross-sectional surveys, 9 were longitudinal studies, and 4 were randomized clinical trials. The cross-sectional studies reported improvements in OHRQoL following root canal treatment. Comparative longitudinal studies did not identify a significant association between improvements in OHRQoL and the method of root canal instrumentation or number of instruments used. Clinical trials found that improvements in OHRQoL were significantly associated with instrumentation technique, surgical-incision approach, and the application of platelet-concentrate during surgery. Several methods of assessing OHRQoL were employed with the most common being the Oral Health Impact Profile (OHIP), albeit using different versions. CONCLUSIONS The results of this systematic review indicate that the QoL of patients improved after endodontic treatment. Nevertheless, these results are limited to patients who seek endodontic treatment and cannot be generalized. The lack of well-designed observational studies with standardized assessment approaches, coupled with heterogeneity of study design and interventions, precluded quantitative synthesis. CLINICAL RELEVANCE Pragmatic clinical trials are more meaningful to understand patient-centered outcomes of treatment. This review shows that endodontic treatment does improve the QoL. However, future studies should use standardized tools and data reporting, which are critical to make meta-analyses possible.
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Affiliation(s)
- Prasanna Neelakantan
- Discipline of Endodontology, Faculty of Dentistry, The University of Hong Kong, 34, Hospital Road, Sai Ying Pun, Hong Kong, Hong Kong.
| | - Pei Liu
- Discipline of Dental Public Health, Faculty of Dentistry, The University of Hong Kong, 34, Hospital Road, Sai Ying Pun, Hong Kong, Hong Kong
| | - Paul M H Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| | - Colman McGrath
- Discipline of Dental Public Health, Faculty of Dentistry, The University of Hong Kong, 34, Hospital Road, Sai Ying Pun, Hong Kong, Hong Kong.
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Chew T, Brennan D, Rossi-Fedele G. Comparative Longitudinal Study on the Impact Root Canal Treatment and Other Dental Services Have on Oral Health-related Quality of Life Using Self-reported Health Measures (Oral Health Impact Profile-14 and Global Health Measures). J Endod 2019; 45:985-993.e1. [PMID: 31202516 DOI: 10.1016/j.joen.2019.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 03/20/2019] [Accepted: 05/01/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The literature assessing quality of life for subjects who have undergone root canal treatment (RCT) is scarce. The aim of this study was to compare the effect of RCT with other dental services (exodontia, restorative, prosthodontics, periodontics, and negative controls [preventative and scale and clean]) on oral health-related quality of life. METHODS A random sample of 3000 adults aged 30-61 years was obtained from the Australian electoral roll in 2009. Data were collected through questionnaires, dental service logbooks, and treatment receipts. The impact their dentition had at baseline and the 2-year follow-up for the Oral Health Impact Profile-14 and the self-rated dental health score followed by "global transition statement of change" (GTSC) was assessed. Binary regression models were used to compare the outcomes. RESULTS Responses were collected from 1096 respondents (response rate = 36.5%). After adjustment (for age, sex, household income, and reason for visit), the RCT group had significant differences (P ≤ .05) to other dental services at the 2-year follow-up using the Oral Health Impact Profile-14 (odds ratio = 0.34; 95% confidence interval, 0.12-0.96) and GTSC (odds ratio = 0.29; 95% confidence interval, 0.09-0.88) but not with individual treatment groups. Using the self-rated dental health score/GTSC, only the prosthodontic treatment group had a significant difference to the RCT group at baseline, whereas the negative controls (P ≤ .01) had significant differences to the RCT group with the odds for improved health 5 times higher, at 2-year follow-up. CONCLUSIONS The RCT group presented with similar oral health-related quality of life when compared with the other individual treatment groups; however, they consistently reported poorer oral health outcomes when the negative controls were included.
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Affiliation(s)
| | - David Brennan
- Australian Research Centre for Population Oral Health, Adelaide Dental School, The University of Adelaide, Adelaide, Australia
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Keskin C, Sariyilmaz E, Keleş A, Güler DH. Effect of intracanal cryotherapy on the fracture resistance of endodontically treated teeth. Acta Odontol Scand 2019; 77:164-167. [PMID: 30623736 DOI: 10.1080/00016357.2018.1549748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The aim of this study is to evaluate the effect of intracanal cryotherapy on the fracture resistance of endodontically treated teeth. MATERIALS AND METHODS Sixty single-rooted maxillary lateral incisor teeth with single root canals were selected and randomly divided into two groups (n = 30). The specimens were immersed in distilled water, which was heated to 37 °C during the procedures. The root canals were chemomechanically prepared up to the apical size of 50 and assigned to either the control group or the cryotherapy group. The specimens in the cryotherapy group were irrigated with 20 mL sterile cold (2.5 °C) saline solution, which was delivered with an EndoVac system for 5 min, whereas the specimens in the control group received a sterile saline solution at room temperature. The fracture resistance of the specimens was then tested with a universal testing machine. The data was analyzed using the independent sample t test with a 5% significance threshold. RESULTS The fracture strength of the specimens in the intracanal cryotherapy group was significantly lower than that of the control group (p< .05). CONCLUSIONS Application of intracanal cryotherapy as a final irrigant reduced the vertical fracture resistance of prepared roots when compared to the control group.
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Affiliation(s)
- Cangül Keskin
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Evren Sariyilmaz
- Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - Ali Keleş
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Duygu H. Güler
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
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Chandraweera L, Goh K, Lai‐Tong J, Newby J, Abbott P. A survey of patients’ perceptions about, and their experiences of, root canal treatment. AUST ENDOD J 2018; 45:225-232. [DOI: 10.1111/aej.12312] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Lahiru Chandraweera
- Oral Restorative and Rehabilitative Sciences UWA Dental School The University of Western Australia (M512) Nedlands Western Australia Australia
| | - Kelly Goh
- Oral Restorative and Rehabilitative Sciences UWA Dental School The University of Western Australia (M512) Nedlands Western Australia Australia
| | - Julia Lai‐Tong
- Oral Restorative and Rehabilitative Sciences UWA Dental School The University of Western Australia (M512) Nedlands Western Australia Australia
| | - Janni Newby
- Oral Restorative and Rehabilitative Sciences UWA Dental School The University of Western Australia (M512) Nedlands Western Australia Australia
| | - Paul Abbott
- Oral Restorative and Rehabilitative Sciences UWA Dental School The University of Western Australia (M512) Nedlands Western Australia Australia
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Wong AWY, Zhang S, Li SKY, Zhang C, Chu CH. Clinical studies on core-carrier obturation: a systematic review and meta-analysis. BMC Oral Health 2017; 17:167. [PMID: 29284463 PMCID: PMC5747112 DOI: 10.1186/s12903-017-0459-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 12/14/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This systematic review aimed to evaluate the clinical performance of core-carrier obturation in endodontic treatment. METHODS Keywords of "(core carrier OR Thermafil) OR (cold lateral condensation OR lateral condensation) OR (warm vertical condensation OR vertical condensation) AND (obturation OR root canal filling) AND clinical study" were searched for all obtainable publications up to year 2017 in the databases of PubMed, ScienceDirect, EMBASE, Scopus and Web of Science. The success rate, short-term postoperative pain, overfilling and adaptation of core-carrier obturation from clinical studies were selected. Reviews, laboratory studies, animal studies and irrelevant reports were excluded. RESULTS 1349 relevant articles were identified with 149 duplicated articles removed and 1173 irrelevant articles were excluded after screening. The titles and abstracts of the 19 identified articles were screened in the systematic review. The full texts of remaining articles were retrieved with data extracted for meta-analysis on the success rate, postoperative pain, overfilling and adaptation of obturation. The pooled success rate of core-carrier obturation was 83% (95% CI: 69%-91%). The pooled incidence of 1-day and 7-day short-term postoperative pain were 35% (95% CI: 15%-62%) and 6% (95% CI: 1-35%). The pooled proportion of teeth with overfilling and adequate adaptation of the obturation material were 31% (95% CI: 18%-50%) and 85% (95% CI: 75%-91%), respectively. CONCLUSIONS The success rate of endodontic treatment using core-carrier obturation was 83%. Short-term postoperative pain was not uncommon (24%). Most teeth (85%) had adequate adaptation using core-carrier obturation material, but a considerable amount of teeth (31%) had overfilling.
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Affiliation(s)
- Amy Wai-Yee Wong
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China
| | - Shinan Zhang
- School of Stomatology, Kunming Medical University, Yunnan, China
| | | | - Chengfei Zhang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China
| | - Chun-Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China. .,3B53A, Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong, SAR, China.
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