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Manohar B, Chowdry S, Bhuvaneshwari S, Aliuddin SK, Chaudhari D, Pathak K. Sampling Methods and their Prospects in Liquid-Based Cytology of Oral Mucosa: A Comparative Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2023; 15:S324-S325. [PMID: 37654293 PMCID: PMC10466523 DOI: 10.4103/jpbs.jpbs_525_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 10/30/2022] [Indexed: 09/02/2023] Open
Abstract
Examining epithelial cells in the mouth cavity is simple and non-invasive with exfoliative cytology. Liquid-based cytology is an additional diagnostic technique that can improve the specificity and sensitivity of conventional cytology. The purpose of our study was to describe the consistency of normal oral mucosa samples obtained with three different tools: the Cytobrush®, dermatological curette, and OralCDx® for liquid-based cytology. Literature review was done, and reporting of the improvements in the field of investigation and diagnosis has been reported. The present communication aims toward comparing three different sampling instruments such as Cytobrush, curette, and OralCDx for liquid-based cytology of the oral mucosa.
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Affiliation(s)
- Balaji Manohar
- Kalinga Institute of Dental Sciences, Kiit Deemed to be University Bhubaneswar, Odisha, India
| | - Shatabdi Chowdry
- Kalinga Institute of Dental Sciences, Kiit Deemed to be University Bhubaneswar, Odisha, India
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Kumarguru BN, Narayana ML, Urvashi G, Ramaswamy A. Utility of Indigenous Cytology Technique in the Diagnosis of Oral Cavity Lesions using Normal Saline as a Processing Fluid: A Comparative Study. J Cytol 2023; 40:58-67. [PMID: 37388401 PMCID: PMC10305897 DOI: 10.4103/joc.joc_64_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 10/16/2022] [Accepted: 03/08/2023] [Indexed: 07/01/2023] Open
Abstract
Background Oral cancer is a major health problem in developing countries. Cytology has been widely accepted as a tool in the early diagnosis of cancer. Objectives To evaluate the diagnostic utility of four different cytology techniques, that is, modified brush cytology (BR) technique, brush cytology cytocentrifugation (BRCC) technique, modified scrape cytology (SR) technique, and scrape cytology cytocentrifugation (SRCC) technique and correlate the cytopathological diagnosis with the available histopathological diagnosis. Materials and Methods It was a prospective observational study of oral cavity lesions conducted from January 2018 to December 2018 at a rural tertiary care referral institute. Smears prepared by four different techniques, that is, BR technique, BRCC technique, SR technique and SRCC technique were evaluated using a scoring system. Normal saline was used as a processing fluid for cytocentrifugation techniques, and the cytological diagnosis was compared with an available histopathological diagnosis for concordance. Results Twenty-seven cases of oral cavity lesions were analyzed. Squamous cell carcinoma (55.56%) constituted the most common lesion diagnosed by cytology. Total concordance was 95.65%. Brush cytology techniques were better technique than scrape cytology techniques. Cytocentrifugation techniques were better than modified brush cytology technique and modified scrape cytology technique and the values were statistically highly significant (P<0.0001). Conclusion The utility of only normal saline as a processing fluid for cytocentrifugation may be considered an unexplored and prudent endeavor. This indigenously designed technique may be employed to improve the quality of cytological preparation for the evaluation of oral cavity lesions.
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Affiliation(s)
- B N Kumarguru
- Department of Pathology, PES Institute of Medical Sciences and Research, Kuppam, Chittoor District, Andhra Pradesh, India
| | - M Lakshmi Narayana
- Department of Otorhinolaryngology, Sri Balaji Medical College Hospital and Research Institute, Renigunta, Andhra Pradesh, India
| | - G Urvashi
- Department of Otorhinolaryngology, Vashith Skin and ENT Hospital, Subhash Chowk, Sonipat, Haryana, India
| | - A.S Ramaswamy
- Department of Pathology, PES Institute of Medical Sciences and Research, Kuppam, Chittoor District, Andhra Pradesh, India
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Kokubun K, Nakajima K, Yamamoto K, Akashi Y, Matsuzaka K. Evaluation of oral brush liquid-based cytology for oral squamous cell carcinoma: a comparative study of cytological and histological diagnoses at a single center. BMC Oral Health 2023; 23:145. [PMID: 36906554 PMCID: PMC10007825 DOI: 10.1186/s12903-023-02839-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/24/2023] [Indexed: 03/13/2023] Open
Abstract
PURPOSE Liquid-based cytology is highly useful in oral cytology. However, there are only few reports on the accuracy of this method. The current study aimed to compare oral liquid-based cytological and histological diagnoses and to evaluate items that should be considered in oral cytological diagnosis for oral squamous cell carcinoma. METHODS We included 653 patients who underwent both oral cytological and histological examinations. Data on sex, specimen collection region, cytological and histological diagnoses, and histological images were reviewed. RESULTS The overall male-to-female ratio was 1:1.18. The tongue was the most common specimen collection region, followed by the gingiva and buccal mucosa. The most common cytological examination result was negative (66.8%), followed by doubtful (22.7%) and positive (10.3%). The sensitivity, specificity, positive predictive value, and negative predictive value of cytological diagnosis were 69%, 75%, 38%, and 92%, respectively. Approximately 8.3% of patients with a negative cytological diagnosis had a histological diagnosis of oral squamous cell carcinoma. Furthermore, 86.1% of histopathologic images of cytology-negative squamous cell carcinomas exhibited well-differentiated keratinocytes lacking atypia on the surface. The remaining patients developed recurrence, or they had low cell counts. CONCLUSION Liquid-based cytology is useful in screening oral cancer. However, a cytological diagnosis of superficial-differentiated oral squamous cell carcinoma is occasionally inconsistent with the histological diagnosis. Therefore, histological and cytological examinations should be performed if tumor-like lesions are suspected clinically.
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Affiliation(s)
- Katsutoshi Kokubun
- Department of Pathology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan.
| | - Kei Nakajima
- Department of Pathology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Kei Yamamoto
- Department of Pathology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Yoshihiko Akashi
- Department of Pathology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Kenichi Matsuzaka
- Department of Pathology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
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Shrivastava Y, Yuwanati M, Ganesh N. Absence of Synergistic Effect of Toluidine Blue and Cytomorphometry in Discriminating Dysplasia in Oral Exfoliative Cytology. CLINICAL CANCER INVESTIGATION JOURNAL 2023. [DOI: 10.51847/w62uz2a9o8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Correlation between brush cytology results and histopathological examination in diagnostic evaluation of precancerous conditions and laryngeal cancer: A prospective study. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2022-0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Introduction
The aim of the paper was to demonstrate that brush cytology can be useful in diagnostic evaluation of precancerous states and laryngeal cancer.
Materials and Methods
Ninety-two patients were analyzed. The control group included patients with benign laryngeal lesions, while the study group was composed of patients in whom a precancerous condition or laryngeal cancer was suspected. Material for histopathological and cytological examination was collected during a laryngeal microsurgery. The authors analyzed the consistency of the results of cytological and histopathological examination in the diagnostic evaluation of precancerous conditions and laryngeal cancer.
Results
Comparing diagnoses based on cytological examination with the results of histopathological examinations, the authors observed that there was a strong and statistically significant (p<0.001) correlation between the results. The accuracy of brush cytology in the conducted study indicates that the sensitivity and specificity of the test reaches 90.09% and 93.5% with 4 false negative and 3 false positive results. Positive prediction reached 93% and negative prediction reached 91.5%.
Conclusions
Brush cytology of the larynx may be useful in screening and as an auxiliary test in diagnostic evaluation of precancerous conditions and laryngeal cancer.
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Early Diagnosis of Oral Mucosal Alterations in Smokers and E-Cigarette Users Based on Micronuclei Count: A Cross-Sectional Study among Dental Students. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182413246. [PMID: 34948855 PMCID: PMC8707162 DOI: 10.3390/ijerph182413246] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 12/29/2022]
Abstract
The presence of micronuclei in oral epithelial cells is considered a marker of genotoxicity, which can be identified using exfoliative cytology. The aim of this study was to investigate cytotoxic damage through the evaluation of micronuclei in the oral mucosa of smokers and e-cigarette users compared to nonsmokers. We obtained smears from the buccal mucosa of 68 participants divided in 3 groups (smokers, e-cigarette users and nonsmokers), which were further processed with Papanicolaou stain. The frequencies of micronuclei and micronucleated cells were recorded and statistically analyzed at a level of significance of p < 0.05. The mean micronuclei values per 1000 cells were 3.6 ± 1.08 for smokers, 3.21 ± 1.12 for e-cigarette users and 1.95 ± 1.05 for nonsmokers. The mean values of micronucleated cells per 1000 cells were 2.48 ± 0.91 for smokers, 2.39 ± 1.07 for e-cigarette users and 1.4 ± 0.68 for nonsmokers. Smokers and e-cigarette users had significantly higher values of micronuclei and micronucleated cells compared to nonsmokers, but there were no significant differences between smokers and e-cigarette users. We concluded that the micronuclei count can be used as an early indicator for alterations of oral mucosa and exfoliative cytology represents an accessible tool which could be applied for mass screening.
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Gaida K, Deuerling L, Neumann H, Remmerbach TW. Comparison between two cell collecting methods for liquid-based brush biopsies: a consecutive and retrospective study. BMC Oral Health 2021; 21:195. [PMID: 33863321 PMCID: PMC8052744 DOI: 10.1186/s12903-021-01557-5] [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] [Received: 12/07/2020] [Accepted: 04/06/2021] [Indexed: 12/18/2022] Open
Abstract
Background This study compares two different cell collectors, the Orcellex Brush (rigid brush) and the Cytobrush GT (nylon brush), using liquid-based cytology. A comparison of their obtainment procedures was also considered. The aim was to determine the diagnostic accuracy for detection of malignancy in oral brush biopsies. PICO-Statement: In this consecutive and retrospective study we had as population of interests, patients with oral lesions, the intervention was the brush biopsy with two different cell collectors and the control was healthy oral mucosa. The outcome of the study was to compare both cell collectors. Methods From 2009 to 2018, 2018 patients with oral lesions were studied using the nylon brush (666 cases) and rigid brush (1352 cases). In the first cohort five smears per patient were taken with the nylon brush, while each patient received one smear with the rigid brush in the second cohort. These were further processed in a liquid-based procedure. Cytological evaluations were categorised into ‘negative’, which were considered as negative, whereas ‘doubtful’, ‘suspicious’ and ‘positive’ cytological results were overall considered as positive for malignancy in comparison to the final histological diagnoses. Additionally, the clinical expenditure for each collector was estimated. Results 2018 clinically and histologically proven diagnoses were established, including 181 cases of squamous cell carcinomas, 524 lichen, 454 leukoplakias, 34 erythroplakias and 825 other benign lesions. The sensitivity and specificity of the nylon brush was 93.8% (95% CI 91.6–95.5%) and 94.2% (95% CI 91.8–95.5%) respectively, whereas it was 95.6% (95% CI 94.4–96.6%) and 84.9% (95% CI 83.8–87.5%) for the rigid brush. The temporal advantage using the plastic brushes was 4× higher in comparison to the nylon brush. The risk suffering from a malignant oral lesion when the result of the brushes was positive, suspicious, or doubtful was significantly high for both tests (nylon brush OR: 246.3; rigid brush OR: 121.5). Conclusions Both systems have a similar sensitivity, although only the rigid brush achieved a satisfactory specificity. Additional methods, such as DNA image cytometry, should also be considered to improve the specificity. Furthermore, the rigid brush proved to be more effective at taking a sufficient number of cells, whilst also being quicker and presenting less stress for the patient.
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Affiliation(s)
- Kristin Gaida
- Department of Oral, Maxillofacial and Facial Plastic Surgery, Section of Clinical and Experimental Oral Medicine, Leipzig University Hospital, Liebigstraße 10-14, 04103, Leipzig, Germany
| | - Lena Deuerling
- Department of Oral, Maxillofacial and Facial Plastic Surgery, Section of Clinical and Experimental Oral Medicine, Leipzig University Hospital, Liebigstraße 10-14, 04103, Leipzig, Germany
| | - Heinrich Neumann
- Medical Care Centre for Histology, Cytology and Molecular Diagnostics, 52351, Düren, Germany
| | - Torsten W Remmerbach
- Department of Oral, Maxillofacial and Facial Plastic Surgery, Section of Clinical and Experimental Oral Medicine, Leipzig University Hospital, Liebigstraße 10-14, 04103, Leipzig, Germany.
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Sukegawa S, Ono S, Nakano K, Takabatake K, Kawai H, Nagatsuka H, Furuki Y. Clinical study on primary screening of oral cancer and precancerous lesions by oral cytology. Diagn Pathol 2020; 15:107. [PMID: 32912249 PMCID: PMC7488236 DOI: 10.1186/s13000-020-01027-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/04/2020] [Indexed: 12/24/2022] Open
Abstract
Background This study was conducted to compare the histological diagnostic accuracy of conventional oral-based cytology and liquid-based cytology (LBC) methods. Methods Histological diagnoses of 251 cases were classified as negative (no malignancy lesion, inflammation, or mild/moderate dysplasia) and positive [severe dysplasia/carcinoma in situ (CIS) and squamous cell carcinoma (SCC)]. Cytological diagnoses were classified as negative for intraepithelial lesion or malignancy (NILM), oral low-grade squamous intraepithelial lesion (OLSIL), oral high-grade squamous intraepithelial lesion (OHSIL), or SCC. Cytological diagnostic results were compared with histology results. Results Of NILM cytology cases, the most frequent case was negative [LBC n = 50 (90.9%), conventional n = 22 (95.7%)]. Among OLSIL cytodiagnoses, the most common was negative (LBC n = 34; 75.6%, conventional n = 14; 70.0%). Among OHSIL cytodiagnoses (LBC n = 51, conventional n = 23), SCC was the most frequent (LBC n = 31; 60.8%, conventional n = 7; 30.4%). Negative cases were common (LBC n = 13; 25.5%, conventional n = 14; 60.9%). Among SCC cytodiagnoses SCC was the most common (LBC n = 16; 88.9%, conventional n = 14; 87.5%). Regarding the diagnostic results of cytology, assuming OHSIL and SCC as cytologically positive, the LBC method/conventional method showed a sensitivity of 79.4%/76.7%, specificity of 85.1%/69.2%, false-positive rate of 14.9%/30.7%, and false-negative rate of 20.6%/23.3%. Conclusions LBC method was superior to conventional cytodiagnosis methods. It was especially superior for OLSIL and OHSIL. Because of the false-positive and false-negative cytodiagnoses, it is necessary to make a comprehensive diagnosis considering the clinical findings.
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Affiliation(s)
- Shintaro Sukegawa
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, 1-2-1, Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan. .,Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - Sawako Ono
- Department of Pathology, Kagawa Prefectural Central Hospital, Takamatsu, Kagawa, Japan.,Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Keisuke Nakano
- Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kiyofumi Takabatake
- Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hotaka Kawai
- Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hitoshi Nagatsuka
- Department of Oral Pathology and Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yoshihiko Furuki
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, 1-2-1, Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
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Osorio-Osorno YA, Arboleda Toro D, Arango JC, Parada-Sanchez MT. Optimized liquid-based cytology for the cellular and molecular analysis of oral keratinocytes: A promising diagnostic tool. Diagn Cytopathol 2020; 49:96-104. [PMID: 32877007 DOI: 10.1002/dc.24604] [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: 06/16/2020] [Revised: 07/23/2020] [Accepted: 08/19/2020] [Indexed: 11/11/2022]
Abstract
BACKGROUND Liquid-based cytology (LBC) has improved exfoliative cytology by facilitating the extraction of more precise information from epithelial cells. The aim of this study was to optimize a protocol using a conventional cytobrush to perform LBC, obtaining oral keratinocytes for their further cellular and molecular analysis. METHODS LBC was performed in 30 healthy donors from buccal mucosa. We evaluated the use of diethyl pyrocarbonate (DEPC)-treated Dulbecco's Modified Eagle Medium (DMEM) medium right after the collection of the cells. Cell morphology and viability were determined by Orcein staining and flow cytometry, respectively. RNA was extracted by the trizol method, and evaluated with spectrometry and electrophoresis. Finally, RNA was copied into cDNA and GAPDH and TLR2 genes were amplified by reverse transcription polymerase chain reaction (RT-PCR) and quantitative reverse transcription polymerase chain reaction (RT-qPCR) using specific primers. RESULTS Only DEPC-treated DMEM preserved the viability of intact intraepithelial keratinocytes. RNA quantity and quality improves in samples treated with DEPC. RNA integrity is comparable with a cell line control. GAPDH gene was successfully amplified by RT-PCR and RT-qPCR. CONCLUSIONS Therefore, LBC performed under these conditions becomes a reproducible technique for the retrieval of intraepithelial oral keratinocytes with good cell viability for cytomorphometric analysis, and extraction of good RNA quality suitable for molecular analyses such as PCR. We propose this LBC protocol as a complementary method to the cellular and molecular study of oral mucosa pathologies; however, it requires further study.
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Affiliation(s)
- Yuliana Andrea Osorio-Osorno
- Departamento de Estudios Básicos Integrados, Grupo Estudios BioSociales del Cuerpo, School of Dentistry, Universidad de Antioquia, Medellin, Antioquia, Colombia
| | - David Arboleda Toro
- Departamento de Estudios Básicos Integrados, Grupo Estudios BioSociales del Cuerpo, School of Dentistry, Universidad de Antioquia, Medellin, Antioquia, Colombia
| | - Julian Camilo Arango
- Grupo Micología Médica y Experimental, School of Microbiology, Universidad de Antioquia, Medellin, Antioquia, Colombia
| | - Monica Tatiana Parada-Sanchez
- Departamento de Estudios Básicos Integrados, Grupo Estudios BioSociales del Cuerpo, School of Dentistry, Universidad de Antioquia, Medellin, Antioquia, Colombia
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Yuwanati M, Gadbail A, Gondivkar S, Sarode SC, Dande R, Mhaske S, Tekade S, Pathak SK. A systematic scoping review on utility of cytomorphometry in the detection of dysplasia in oral potentially malignant disorders. J Oral Biol Craniofac Res 2020; 10:321-328. [PMID: 32714783 DOI: 10.1016/j.jobcr.2020.06.016] [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: 04/17/2020] [Revised: 06/17/2020] [Accepted: 06/29/2020] [Indexed: 10/23/2022] Open
Abstract
Background Oral exfoliative cytology is simple, non-invasive, inexpensive tools prone to subjective bias. Objective computer-based quantitative cytomorphometry technique was developed in last few decades to overcome its limitation. However, there is no consensus about the utility of cytomorphometry as a routine screening tool for early detection of dysplastic changes. Objectives To review the utility of cytomorphometry in OPMDs in the detection of dysplasia changes. Method A scoping review was undertaken focusing on cytomorphometric analysis in exfoliative cells for detection of oral epithelial dysplasia and cytomorphometric parameter denoting dysplasia. The systematic search was carried out in the online journal databases (Scopus, Google Scholar, PubMed, Web of Science) using keywords until December 2019 for the studies evaluated the cytomorphometry in the detection of dysplastic changes in OPMDs. Three authors independently extracted data using collection forms. Result The search strategy found seven analytical cross-sectional studies for scoping review after eliminating 8940 out of 8947 initial results. The scoping review showed that cytomorphometry is useful tool in detecting the dysplastic changes in OPMDs. In addition, decrease in mean cellular area, increase in mean nuclear area, and decrease in mean cell diameter, increase mean nuclear diameter, increase in mean nuclear and cytoplasmic area ratio, associated with development of dysplastic changes in OPMDs. Conclusion Cytomorphometry is promising tool, yet there is currently no-good evidence to support role of cytomorphometry in detecting the dysplastic changes in OPMDs in this setting. More research is required for refinement of cytomorphometry as a screening tool.
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Affiliation(s)
- Monal Yuwanati
- Department of Oral Pathology & Microbiology, People's College of Dental Sciences and Research Centre, People's University, Bhopal, Madhya Pradesh, India
| | - Amol Gadbail
- Department of Dentistry, Indira Gandhi Government Medical College & Hospital, Nagpur, Maharashtra State, India
| | - Shailesh Gondivkar
- Department of Oral Medicine & Radiology, Government Dental College & Hospital, Nagpur, Maharashtra, India
| | - Sachin C Sarode
- Department of Oral Pathology & Microbiology, Dr. D.Y. Patil Dental College & Hospital, Dr. D.Y. Patil Vidyapeeth, Maharashtra State, Pune, India
| | - Ravi Dande
- Department of Dentistry, Indira Gandhi Government Medical College & Hospital, Nagpur, Maharashtra State, India
| | - Shubhangi Mhaske
- Department of Oral Pathology & Microbiology, People's College of Dental Sciences and Research Centre, People's University, Bhopal, Madhya Pradesh, India
| | - Satayjit Tekade
- Modern Dental College and Research Centre, Indore, Madhya Pradesh, India
| | - Sandeep Kumar Pathak
- Indian Institutes of Science Education and Research, Bhopal, Madhya Pradesh, India
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Deuerling L, Gaida K, Neumann H, Remmerbach TW. Evaluation of the Accuracy of Liquid-Based Oral Brush Cytology in Screening for Oral Squamous Cell Carcinoma. Cancers (Basel) 2019; 11:cancers11111813. [PMID: 31752196 PMCID: PMC6896118 DOI: 10.3390/cancers11111813] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/08/2019] [Accepted: 11/13/2019] [Indexed: 12/17/2022] Open
Abstract
This study evaluates the accuracy of the results of liquid-based oral brush cytology and compares it to the histology and/or the clinical follow-ups of the respective patients. A total of 1352 exfoliated specimens were collected with an Orcellex brush from an identical number of oral lesions, then cytological diagnoses were made using liquid-based cytology. The final diagnoses in the study were 105 histologically proven squamous cell carcinomas (SCCs), 744 potentially malignant lesions and 503 cases of traumatic, inflammatory or benign hyperplastic oral lesions. The sensitivity and specificity of the liquid-based brush biopsy were 95.6% (95% CI 94.5–96.7%) and 84.9% (95% CI 83.0–86.8%), respectively. This led to the conclusion that brush biopsy is potentially a highly sensitive and reliable method to make cytological diagnoses of oral neoplasia. The main advantage of a brush biopsy over a scalpel biopsy is that it is less invasive and is more tolerated by the patients. Therefore, more lesions can be screened and more cancers can be detected at an early stage.
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Affiliation(s)
- Lena Deuerling
- Section of Clinical and Experimental Oral Medicine, University of Leipzig, Liebigstraße 10-14, 04103 Leipzig, Germany; (L.D.); (K.G.)
| | - Kristin Gaida
- Section of Clinical and Experimental Oral Medicine, University of Leipzig, Liebigstraße 10-14, 04103 Leipzig, Germany; (L.D.); (K.G.)
| | - Heinrich Neumann
- Medical Care Center for Histology, Cytology and Molecular Diagnostics, 52351 Düren, Germany;
| | - Torsten W. Remmerbach
- Section of Clinical and Experimental Oral Medicine, University of Leipzig, Liebigstraße 10-14, 04103 Leipzig, Germany; (L.D.); (K.G.)
- German Association of Oral Diagnostics (DGOD mbH), Wettiner Str. 10, 04105 Leipzig, Germany
- Correspondence:
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Bacterial Colonization and Tissue Compatibility of Denture Base Resins. Dent J (Basel) 2018; 6:dj6020020. [PMID: 29914101 PMCID: PMC6023505 DOI: 10.3390/dj6020020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 11/18/2022] Open
Abstract
Currently, there is minimal clinical data regarding biofilm composition on the surface of denture bases and the clinical tissue compatibility. Therefore, the aim of this experimental study was to compare the bacterial colonization and the tissue compatibility of a hypoallergenic polyamide with a frequently used PMMA resin tested intraorally in a randomized split-mouth design. Test specimens made of polyamide (n = 10) and PMMA (n = 10) were attached over a molar band appliance in oral cavity of 10 subjects. A cytological smear test was done from palatal mucosa at baseline and after four weeks. The monolayers were inspected for micronuclei. After four weeks in situ, the appliance was removed. The test specimens were immediately cultivated on non-selective and selective nutrient media. All growing colonies were identified using VITEK-MS. The anonymized results were analyzed descriptively. A total of 110 different bacterial species could be isolated, including putative pathogens. An average of 17.8 different bacterial species grew on the PMMA specimens, and 17.3 on the polyamide specimens. The highest number of different bacterial species was n = 24, found on a PMMA specimen. On the two specimens, a similar bacterial distribution was observed. Micronuclei, as a marker for genotoxic potential of dental materials, were not detected. This study indicates that the composition of bacterial biofilm developed on these resins after four weeks is not influenced by the type of resin itself. The two materials showed no cytological differences. This investigation suggests that polyamide and PMMA are suitable for clinical use as denture base material.
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