| Recruiting | Effects of Periodontal Treatment Associated With Antimicrobial Photodynamic Therapy on Halitosis in Patients W NCT07463859 | University of Sao Paulo | N/A |
| Not Yet Recruiting | Evaluation of the Safety and Efficacy of SALI-10 Probiotic Lozenges NCT07508839 | Ostia Sciences | N/A |
| Not Yet Recruiting | Oral Probiotics for Halitosis in Healthy Adults NCT07384130 | John Hale | N/A |
| Completed | Cotinus Coggygria Mouthwash and Halitosis and Oral Hygiene in Orthodontic Patients NCT07254819 | University of Athens | N/A |
| Not Yet Recruiting | Halitosis, Sleep and Mental Health in Bariatric Surgery Candidates NCT07175142 | University of Nove de Julho | — |
| Completed | Oral Probiotics and Denture Care in Saudi Arabia: Evaluating Knowledge, Practices, and the Future of Innovativ NCT07475195 | King Saud University | — |
| Completed | Antimicrobial Photodynamic Therapy Or Lingual Scraper Associated With Periodontal Treatment In The Reduction O NCT07433816 | Medical University of Silesia | N/A |
| Recruiting | Role of Kefir Mouth Wash in Oral Health Status Amelioration NCT06900881 | Al-Mustansiriyah University | Phase 2 / Phase 3 |
| Completed | Adjunctive Effect of Photodynamic Therapy on Halitosis NCT06764342 | Federal University of Minas Gerais | N/A |
| Not Yet Recruiting | Chios Mastic Toothpaste and Halitosis and Oral Hygiene in Orthodontic Patients NCT06766097 | University of Athens | N/A |
| Recruiting | Efficacy of Resveratrol Containing Mouthwash in Reducing Halitosis Related Porphyrymonas Gingivalis. NCT06882564 | Al-Mustansiriyah University | Phase 3 |
| Completed | Olfactory Function and Oral Malodor in Periodontitis Before and After Periodontal Therapy NCT07424300 | Batman University | — |
| Recruiting | Comparative Study Between Photodynamic Therapy with LED Associated with Probiotics in the Treatment of Halitos NCT06583720 | University of Nove de Julho | Phase 1 |
| Recruiting | Evaluation of the Stability of Sulfur Volatile Compounds From Exhaled Air for Halitosis Diagnosis NCT06483646 | University Hospital, Strasbourg, France | N/A |
| Recruiting | The Additional Effect of Tongue Scraping on Halitosis Parameters in Initial Periodontal Therapy NCT06091228 | Universitaire Ziekenhuizen KU Leuven | N/A |
| Completed | Impact of Visual Stimuli on Pediatric Oral Hygiene Performance NCT07150429 | Eskisehir Osmangazi University | N/A |
| Enrolling By Invitation | Investigating the Effect of Chlorine Dioxide and Chlorhexidine Mouthwash on Bad Breath NCT06219226 | Semmelweis University | N/A |
| Completed | Effects of Mechanical, Chemical, and Combination Methods on Halitosis NCT06890104 | Hue University of Medicine and Pharmacy | N/A |
| Active Not Recruiting | Effect of Whitening Agent With Emulsion Gel in Saliva and Halitosis NCT06194123 | Tufts University | N/A |
| Completed | Effect of a Mouthwash Containing Chlorhexidine and Chlorine Dioxide on Halitosis NCT07265102 | Can Tho University of Medicine and Pharmacy | N/A |
| Completed | Assessment of Photodynamic Therapy With Annatto and Led for the Treatment of Halitosis in Mouth-Breathing Chil NCT05590897 | University of Nove de Julho | Phase 1 / Phase 2 |
| Completed | Chios Mastic Mouthwash and Halitosis and Oral Hygiene in Orthodontic Patients NCT05647369 | Iosif Sifakakis | N/A |
| Completed | A Clinical Study to Examine the Effects of an Experimental Toothpaste Compared to a Regular Fluoride Toothpast NCT05524948 | HALEON | N/A |
| Active Not Recruiting | Effectiveness of Aquamin® in Mitigating Halitosis NCT05058638 | University of Michigan | Phase 2 |
| Unknown | Evaluation of Clinical and Cost-effectiveness of Different Mouthwashes on Controlling Halitosis Among a Group NCT04905940 | Cairo University | N/A |
| Completed | Effects of Curcumin-containing Toothpaste on Dental Biofilm and Associated Oral Halitosis NCT04998617 | University of North Carolina, Chapel Hill | N/A |
| Completed | The Effect of Oral Probiotics on Oral Hygiene and Halitosis in Orthodontic Patients. NCT05651503 | University of Athens | N/A |
| Completed | Effect of an Investigational Lozenge (Biofresh® 4plus) Versus Placebo Control on Oral Malodor (Intra-Oral Hali NCT05413382 | Novozymes A/S | N/A |
| Completed | Effect of Wearing Face Masks on Salivary Parameters and Halitosis NCT04914208 | University of Göttingen | N/A |
| Completed | Comparative Study Between Photodynamic Therapy With Urucum and LED and Probiotics in Halitosis Reduction NCT03996044 | University of Nove de Julho | Phase 1 |
| Unknown | Efficacy of Different Toothbrushes and Hygiene Regimen NCT04216069 | University of Nove de Julho | Phase 1 / Phase 2 |
| Completed | Questionnaire Regarding the Effect of Wearing Face Masks on Oral Health NCT04632004 | University of Göttingen | N/A |
| Completed | Effect of a Probiotic Water on Oral Health in Adults NCT04473404 | Dose Biosystems Inc. | N/A |
| Completed | The Efficacy of Oregano Essential Oil in Reducing Oral Halitosis NCT04779502 | MOHAMED SAEED M. ALI | N/A |
| Completed | Evaluation of Halitosis After Treatment With Photodynamic Therapy NCT03973684 | University of Nove de Julho | N/A |
| Completed | Evaluation of the Treatment of Halitosis With Photodynamic Therapy in Older Patients With Complete Denture NCT03960983 | University of Nove de Julho | N/A |
| Completed | Treatment of Halitosis With Photodynamic Therapy in Older Patients NCT03591484 | University of Nove de Julho | N/A |
| Completed | Evaluation of Halitosis After Treatment With Photodynamic Therapy Associated With Periodontal Treatment NCT03996915 | University of Nove de Julho | N/A |
| Completed | Effect of Single Rinsing With Three Different Types of Mouthwash on VSC Levels in Morning Breath NCT04279106 | University of L'Aquila | N/A |
| Completed | Laser Tongue Debridement for Oral Malodor NCT04120948 | New York Head & Neck Institute | N/A |
| Unknown | Effect of Photodymamic Therapy With Urucum and LED in the Reduction of Halitosis NCT03346460 | University of Nove de Julho | Phase 2 |
| Unknown | Halitosis During Active Orthodontic Treatment NCT03901625 | Riyadh Colleges of Dentistry and Pharmacy | N/A |
| Unknown | Photodynamic Therapy With Red Leds in Microorganisms Related to Halitosis NCT03656419 | University of Nove de Julho | N/A |
| Withdrawn | Assessing the Effect of Periodontal Debridement, Tongue Cleaning and Mouth Rinsing for the Treatment of Oral M NCT02665780 | University of British Columbia | N/A |
| Unknown | Green Tea With Aloe Vera Mouthwash and Chlorohexidine Mouthwash NCT03115892 | Cairo University | Phase 1 / Phase 2 |
| Unknown | Effect of Probiotic Lozenges on Halitosis in Patients With Chronic Periodontitis NCT02789436 | University of Zagreb | Phase 4 |
| Completed | Clinical Evaluation of Some Local Antimicrobial Agents' Adjunctive Effects On Periodontal Parameters and Halit NCT03468595 | Near East University, Turkey | N/A |
| Completed | Randomized Trial of a Gum Health Formulation NCT03196648 | Glo Science, Inc. | N/A |
| Completed | Efficacy of Glycine Powder Air-Polishing Combined With Scaling and Root Planing in the Treatment of Periodonti NCT03031756 | Near East University, Turkey | N/A |
| Completed | Inulin and S. Salivarius Reduce Halitosis NCT02794766 | Universidade de Passo Fundo | Phase 2 |
| Completed | Effect of Miswak and Miswak Extract on Oral Malodor NCT02628938 | Riyadh Colleges of Dentistry and Pharmacy | Phase 2 |
| Unknown | Photodynamic Therapy in Adolescents Halitosis NCT02007993 | University of Nove de Julho | N/A |
| Completed | Three Different Oral Hygiene Regimes on Three Volatile Sulfur Compounds NCT02689297 | Tokyo Medical and Dental University | Phase 4 |
| Completed | Oral Hygiene Procedures on Reduction of Oral Malodor NCT02113137 | Ei Ei Aung | Phase 4 |
| Completed | "Study of Halitosis in Patients With Advanced Chronic Periodontitis" NCT02368678 | Federal University of Minas Gerais | N/A |
| Unknown | Effect of Mouth Rinses in Oral Malodor NCT01747226 | Universitaire Ziekenhuizen KU Leuven | N/A |
| Completed | Impact of Bracket Design and Oral Hygiene Maintenance on Halitosis in the Orthodontic Patient NCT01948349 | UConn Health | N/A |
| Unknown | New "in Vitro" Diagnostic Test for Oral Malodour NCT01226251 | Universitaire Ziekenhuizen KU Leuven | — |
| Recruiting | Rare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford NCT01793168 | Sanford Health | — |
| Completed | Halitosis and Mouth Breathing in Children NCT01269957 | University of Nove de Julho | — |
| Completed | Halitosis Devised Questionnaire Evaluating a New Treatment NCT01046812 | New York Head & Neck Institute | N/A |
| Unknown | Effects of Breezy Candy on Halitosis NCT00875927 | Breezy Industries Ltd. | Phase 1 / Phase 2 |
| Completed | A New Portable Monitor for Measuring Odorous Compounds in Oral, Exhaled and Nasal Air NCT01139073 | Okayama University | — |
| Completed | Bad Breath Response to Tongue Scraper and Rinses NCT00867035 | University of California, San Francisco | N/A |
| Completed | Oral Malodour and Periodontal Disease-related Parameters NCT01234948 | Aristotle University Of Thessaloniki | — |
| Completed | Effect of Mouthwash Containing Camellia Sinensis Extracts on Oral Malodor NCT00932347 | Mahidol University | Phase 2 |
| Completed | Day Long Prevention of Oral Malodor With a Palatal Patch (SmellX) Containing A Herbal Formula NCT01388023 | Hadassah Medical Organization | Phase 2 |
| Completed | Clinical and Microbiological Effects of a Mouthwash Containing Chlorine Dioxide NCT00748943 | Tokyo Medical and Dental University | Phase 1 |
| Completed | A Clinical Trial to Assess the Effects of a Mouthwash Containing Chlorine Dioxide on Oral Malodor NCT00655772 | Tokyo Medical and Dental University | Phase 1 |
| Completed | Prevention of Oral Malodor With an Oral Sticker Containing Herbal Formula NCT00250289 | Hadassah Medical Organization | Phase 1 |
| Completed | Association Between Dental Implants Properties and Malodor Production NCT00254839 | Hadassah Medical Organization | — |