Studies
Primary studies
26,293 studies included by 1,022 non-Cochrane dental reviews extracted from full text, one record per study, so a study included by several reviews is counted once. Most are randomized trials; etiology and diagnostic reviews also include observational and accuracy studies. Cochrane reviews and reviews with only their headline outcomes do not list their included studies here yet.
ReviewStudies included by Site-stratified global oral Helicobacter pylori prevalence: an updated meta-analysis of dental plaque and saliva studies (1989-2026).. Show all studies
| Study | Year | Reviews | Review outcomes linked | Trial data |
|---|---|---|---|---|
| Detection of Salivary Helicobacter pylori in Pediatric Patients and Its Association With Gastrointestinal and Oral Health. Samani et al. (2026) · Samani Rojin, Sadredinamin Mehrzad, et al. · Cureus PMID:41646579 | 2026 | 1 | none stated | not extracted yet |
| Prevalence and virulence factors of Helicobacter pylori isolated from oral cavity of non-disease, gastritis, and gastric cancer patients. Wongsuwanlert M et al. (2024) · Wongsuwanlert Mutita, Teanpaisan Rawee, et al. · Journal of dental sciences PMID:38618069 | 2024 | 1 | none stated | not extracted yet |
| Helicobacter pylori present in caries sample among dental caries patients. Ahmad ZK et al. (2024) · Ahmad Zainab K, Al-Amiedi Baha H H, et al. · The Egyptian journal of immunology PMID:38990061 | 2024 | 1 | none stated | not extracted yet |
| Helicobacter pylori prevalence in healthy Mexican children: comparison between two non-invasive methods. Martínez-Santos et al. (2021) · Martínez-Santos Verónica I, Hernández Catalán Manuel, et al. · PeerJ PMID:34249489 | 2021 | 1 | none stated | not extracted yet |
| [Combined detection of Helicobacter pylori 16S rRNA and cagA gene in saliva specimens using multiplex PCR]. Wang X et al. (2021) · Wang X, Sun L, et al. · Nan fang yi ke da xue xue bao = Journal of Southern Medical University PMID:35012913 | 2021 | 1 | none stated | not extracted yet |
| Distribution of Helicobacter pylori and Periodontopathic Bacterial Species in the Oral Cavity. Kadota et al. (2020) · Kadota Tamami, Hamada Masakazu, et al. · Biomedicines PMID:32549275 | 2020 | 1 | none stated | not extracted yet |
| Current Prevalence of Oral Helicobacter pylori among Japanese Adults Determined Using a Nested Polymerase Chain Reaction Assay. Nagata et al. (2020) · Nagata Ryoko, Ohsumi Tatsuya, et al. · Pathogens (Basel, Switzerland) PMID:33374353 | 2020 | 1 | none stated | not extracted yet |
| Potential involvement of Helicobacter pylori from oral specimens in overweight body-mass index. Hamada M et al. (2019) · Hamada Masakazu, Nomura Ryota, et al. · Scientific reports PMID:30890723 | 2019 | 1 | none stated | not extracted yet |
| Molecular detection of Helicobacter pylori based on the presence of cagA and vacA virulence genes in dental plaque from patients with periodontitis. Flores-Treviño et al. (2019) · Flores-Treviño Carlos Eduardo, Urrutia-Baca Víctor Hugo, et al. · Journal of dental sciences PMID:31210890 | 2019 | 1 | none stated | not extracted yet |
| Detection and genotyping of Helicobacter pylori in saliva versus stool samples from asymptomatic individuals in Northeastern Thailand reveals… Wongphutorn P et al. (2018) · Wongphutorn Phattharaphon, Chomvarin Chariya, et al. · BMC microbiology PMID:29378521 | 2018 | 1 | none stated | not extracted yet |
| Detection of Helicobacter pylori urease antigen in saliva in patients with different gastric H. pylori status. El Khadir et al. (2016) · El Khadir Mounia, Alaoui Boukhris Samia, et al. · Journal of the Chinese Medical Association : JCMA PMID:27075365 | 2016 | 1 | none stated | not extracted yet |
| The frequency of Helicobacter pylori in dental plaque is possibly underestimated. Amiri et al. (2015) · Amiri Negin, Abiri Ramin, et al. · Archives of oral biology PMID:25766471 | 2015 | 1 | none stated | not extracted yet |
| Association of Salivary Helicobacter pylori Infection with Oral Diseases: a Cross-sectional Study in a Chinese Population. Ding et al. (2015) · Ding Yi-Jian, Yan Tian-Lian, et al. · International journal of medical sciences PMID:26392812 | 2015 | 1 | none stated | not extracted yet |
| [Analysis of the infection status of saliva Helicobacter pylori in Lanzhou]. Guo R et al. (2014) · Guo Rui, Che Tuanjie, et al. · Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology PMID:25241537 | 2014 | 1 | none stated | not extracted yet |
| vacA genotypes in oral cavity and Helicobacter pylori seropositivity among adults without dyspepsia. Fernández-Tilapa et al. (2011) · Fernández-Tilapa Gloria, Axinecuilteco-Hilera Jazmín, et al. · Medicina oral, patologia oral y cirugia bucal PMID:20711119 | 2011 | 1 | none stated | not extracted yet |
| [Prevalence of Helicobacter pylori detected by real-time PCR in the subgingival plaque of patients with chronic periodontitis]. Diouf et al. (2011) · Diouf A, Seck-Diallo A M, et al. · Odonto-stomatologie tropicale = Tropical dental journal PMID:21688602 | 2011 | 1 | none stated | not extracted yet |
| Helicobacter pylori in dental plaque and stomach of patients from Northern Brazil. Assumpção et al. (2010) · Assumpção Mônica Baraúna, Martins Luisa Caricio, et al. · World journal of gastroenterology PMID:20572307 | 2010 | 1 | none stated | not extracted yet |
| Helicobacter pylori transiently in the mouth may participate in the transmission of infection. Silva, Tinoco et al. (2010) · Silva Denise G, Tinoco Eduardo M B, et al. · Memorias do Instituto Oswaldo Cruz PMID:20835612 | 2010 | 1 | none stated | not extracted yet |
| Presence of Helicobacter pylori in supragingival dental plaque of individuals with periodontal disease and upper gastric diseases. Silva, Stevens et al. (2010) · Silva Denise G, Stevens Roy H, et al. · Archives of oral biology PMID:20863482 | 2010 | 1 | none stated | not extracted yet |
| An Epidemiologic Study on the Correlation Between Oral Helicobacter pylori and Gastric H. pylori Liu et al. (2009) · Liu Ying, Yue Hui, et al. · Current Microbiology DOI:10.1007/s00284-008-9341-3 | 2009 | 1 | none stated | not extracted yet |
| Is the presence of<i>Helicobacter pylori</i>in the Dental Plaque of Patients with Chronic Periodontitis a Risk Factor for Gastric Infection? Al Asqah et al. (2009) · Al Asqah Mohammed, Al Hamoudi Nawaf, et al. · Canadian Journal of Gastroenterology DOI:10.1155/2009/950527 | 2009 | 1 | none stated | not extracted yet |
| Application of immunoassay for detection of Helicobacter pylori antigens in the dental plaque Leszczynska et al. (2009) · Leszczyńska K, Namiot D, et al. · Advances in Medical Sciences DOI:10.2478/v10039-009-0050-3 | 2009 | 1 | none stated | not extracted yet |
| Detection of Helicobacter Pylori using PCR in dental plaque of patients with and without gastritis Eskandari et al. (2010) · Eskandari A, Mahmoudpour A, et al. · Medicina Oral Patología Oral y Cirugia Bucal DOI:10.4317/medoral.15.e28 | 2009 | 1 | none stated | not extracted yet |
| Molecular detection of Helicobacter pylori in oral samples from patients suffering digestive pathologies Medina et al. (2010) · Medina ML, Medina MG, et al. · Medicina Oral Patología Oral y Cirugia Bucal DOI:10.4317/medoral.15.e38 | 2009 | 1 | none stated | not extracted yet |
| Comparison of different methods to detect Helicobacter pylori in the dental plaque of dyspeptic patients Teoman et al. (2007) · Teoman Idil, Özmeriç Nurdan, et al. · Clinical Oral Investigations DOI:10.1007/s00784-007-0104-5 | 2007 | 1 | none stated | not extracted yet |
| Are dental plaque, poor oral hygiene, and periodontal disease associated with Helicobacter pylori infection? Anand et al. (2006) · Anand Pradeep S, Nandakumar K, et al. · Journal of periodontology PMID:16584352 | 2006 | 1 | none stated | not extracted yet |
| Helicobacter pylori in the dental plaque: is it of diagnostic value for gastric infection? Chitsazi et al. (2006) · Chitsazi Mohammad Taghi, Fattahi Ebrahim, et al. · Medicina oral, patologia oral y cirugia bucal PMID:16816816 | 2006 | 1 | none stated | not extracted yet |
| Occurrence of <i>Helicobacter pylori</i> in dental plaque and saliva of dyspeptic patients Kignel et al. (2005) · Kignel S, de Almeida Pina F, et al. · Oral Diseases DOI:10.1111/j.1601-0825.2004.01043.x | 2005 | 1 | none stated | not extracted yet |
| Prevalence of Helicobacter pylori at oral and gastrointestinal sites in children: evidence for possible oral-to-oral transmission Allaker et al. (2002) · ALLAKER R.P., YOUNG K.A., et al. · Journal of Medical Microbiology DOI:10.1099/0022-1317-51-4-312 | 2002 | 1 | none stated | not extracted yet |
| Detection of Helicobacter pylori DNA in the oral cavity and gastroduodenal system of a Venezuelan population Berroteran et al. (2002) · BERROTERAN ALEJANDRA, PERRONE MARIANELLA, et al. · Journal of Medical Microbiology DOI:10.1099/0022-1317-51-9-764 | 2002 | 1 | none stated | not extracted yet |
| Morphological analysis of <i>Helicobacter pylori</i> from gastric biopsies and dental plaque by scanning electron microscopy Young et al. (2001) · Young K. A., Allaker R. P., et al. · Oral Microbiology and Immunology DOI:10.1034/j.1399-302x.2001.016003178.x | 2001 | 1 | none stated | not extracted yet |
| Detection of Helicobacter pylori in dental plaque and gastric biopsy samples of Turkish patients by PCR-RFLP. Sahin et al. (2001) · Sahin F I, Tinaz A C, et al. · Acta gastro-enterologica Belgica PMID:11475123 | 2001 | 1 | none stated | not extracted yet |
| Absence of Helicobacter pylori in dental plaque assessed by stool test Checchi et al. (2000) · Checchi L · The American Journal of Gastroenterology DOI:10.1016/s0002-9270(00)02023-2 | 2000 | 1 | none stated | not extracted yet |
| Quantitation of Helicobacter pylori in dental plaque samples by competitive polymerase chain reaction. Song, Haller et al. (2000) · Song Q, Haller B, et al. · Journal of clinical pathology PMID:10823142 | 2000 | 1 | none stated | not extracted yet |
| Helicobacter pylori in the oral cavity: high prevalence and great DNA diversity. Song, Spahr et al. (2000) · Song Q, Spahr A, et al. · Digestive diseases and sciences PMID:11215732 | 2000 | 1 | none stated | not extracted yet |
| Helicobacter pylori in dental plaque and saliva. Kim et al. (2000) · Kim N, Lim S H, et al. · The Korean journal of internal medicine PMID:11242806 | 2000 | 1 | none stated | not extracted yet |
| Correlation of Histology, CLO, Dental Plaque, and Saliva in Patients Undergoing Upper GI Endoscopy Qureshi et al. (1999) · Qureshi Huma, Ahmed Waquaruddin, et al. · American Journal of Gastroenterology DOI:10.1111/j.1572-0241.1999.0861a.x | 1999 | 1 | none stated | not extracted yet |
| <i>Helicobacter pylori</i> : The Mouth, Stomach, and Gut Axis Oshowo et al. (1998) · Oshowo A., Gillam D., et al. · Annals of Periodontology DOI:10.1902/annals.1998.3.1.276 | 1998 | 1 | none stated | not extracted yet |
| Helicobacter pylori in dental plaque and gastric mucosa Cheng et al. (1996) · Cheng L.H.H., Webberley M., et al. · Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology DOI:10.1016/s1079-2104(96)80017-5 | 1996 | 1 | none stated | not extracted yet |
| Helicobacter pylori in the mouth - negative isolation from dental plaque and saliva Luman et al. (1996) · Luman Widjaja, Alkout Abdul M., et al. · European Journal of Gastroenterology & Hepatology DOI:10.1097/00042737-199601000-00004 | 1996 | 1 | none stated | not extracted yet |
| Helicobacter pylori infection and dental care. Hardo et al. (1995) · Hardo P G, Tugnait A, et al. · Gut DOI:10.1136/gut.37.1.44 | 1995 | 1 | none stated | not extracted yet |
| Development of a rapid PCR method for identification of Helicobacter pylori in dental plaque and gastric biopsy specimens. Wahlfors et al. (1995) · Wahlfors J, Meurman J H, et al. · European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology PMID:8536726 | 1995 | 1 | none stated | not extracted yet |
| Use of the Polymerase Chain Reaction to Detect Helicobacter Pylori in the Dental Plaque of Healthy and Symptomatic Individuals Banatvala et al. (1994) · Banatvala N., Lopez C. Romero, et al. · Microbial Ecology in Health and Disease DOI:10.3109/08910609409141568 | 1994 | 1 | none stated | not extracted yet |
| Absence ofHelicobacter pylori in dental plaques inHelicobacter pylori positive dyspeptic patients Bernander et al. (1993) · Bernander S., Dalén J., et al. · European Journal of Clinical Microbiology & Infectious Diseases DOI:10.1007/bf01967259 | 1993 | 1 | none stated | not extracted yet |
| Detection of Helicobacter pylori in dental plaque by reverse transcription-polymerase chain reaction Nguyen et al. (1993) · Nguyen A M, Engstrand L, et al. · Journal of Clinical Microbiology DOI:10.1128/jcm.31.4.783-787.1993 | 1993 | 1 | none stated | not extracted yet |
| Identification of Helicobacter pylori DNA in the mouths and stomachs of patients with gastritis using PCR. Mapstone et al. (1993) · Mapstone N P, Lynch D A, et al. · Journal of Clinical Pathology DOI:10.1136/jcp.46.6.540 | 1993 | 1 | none stated | not extracted yet |
| Dental Plaque: A Permanent Reservoir of<i>Helicobacter pylori?</i> Desai et al. (1991) · Desai H. G., Gill H. H., et al. · Scandinavian Journal of Gastroenterology DOI:10.3109/00365529108998615 | 1991 | 1 | none stated | not extracted yet |
| Examination of human stomach biopsies, saliva, and dental plaque for Campylobacter pylori Krajden et al. (1989) · Krajden S, Fuksa M, et al. · Journal of Clinical Microbiology DOI:10.1128/jcm.27.6.1397-1398.1989 | 1989 | 1 | none stated | not extracted yet |
| Bali et al. (2010) matched by author and year (probable) | NR | 1 | none stated | not extracted yet |