Periapical periodontitis

This study tests two different medicines placed inside root canals to kill bacteria in teeth with chronic infection. 24 adults with infected molars will receive either a bioceramic or a calcium hydroxide paste. Researchers measure bacterial levels before and after treatment to se…

This study compares two methods for disinfecting root canals in teeth with apical periodontitis (an infection at the tooth root). Fifty adults with infected molars will receive either a laser-based disinfection or a standard protocol. The goal is to see which method reduces bacte…

This study compares three different root canal dressings used between visits in retreatment cases. The goal is to see which one best reduces inflammation, shrinks infection-related lesions, and lowers pain. Sixty adults with previously treated but still infected lower first molar…

This study compares two medications placed inside the tooth after a failed root canal: standard calcium hydroxide and the painkiller diclofenac sodium. Sixty patients with persistent infection around the tooth root will be randomly assigned to one of the two treatments. Healing w…

This study tests whether a diode laser, apple cider vinegar, or the herb Gymnema Sylvestre can better disinfect root canals in people with type 2 diabetes who have a tooth infection called apical periodontitis. Ninety participants will be split into groups receiving different com…

This study tests whether two nano-sized pastes—nano-calcium hydroxide and nano-chitosan—can reduce inflammation and pain in people who need a second root canal treatment. The trial will enroll 63 adults with a single-rooted tooth that has a persistent infection and no current pai…

This study tests two different root canal filling pastes (iRoot SP and nRoot SP) in 160 adults with chronic tooth infection. The goal is to see which paste better heals the infection and relieves symptoms like pain and swelling. Participants will be followed for up to 2 years aft…

This study compares standard root canal retreatment with a regenerative method using injectable platelet-rich fibrin (i-PRF) in 140 adults with persistent tooth infections. Participants are randomly assigned to one of the two treatments and followed for two years to assess healin…

This study tests whether using a toothpaste with sodium bicarbonate (baking soda) and fluoride can help maintain gum health in adults who have already had non-surgical gum treatment. One hundred participants will use either the special toothpaste or a placebo for six months, whil…

This study compares personalized oral hygiene advice from an AI app versus a human dentist in 148 adults with prediabetes and gum disease. The goal is to see if AI can improve gum health and blood sugar levels as well as a dentist. Participants will have their gums and blood suga…

This study tests whether simvastatin, a common cholesterol drug, can fight infection and reduce inflammation when placed inside a tooth during root canal retreatment. Fifty-four adults with a single-rooted tooth that had a failed root canal and a small area of bone loss around th…

This study tests whether using an 810 nm diode laser during root canal retreatment helps the bone around the tooth heal better. Forty adults with a failed root canal and a visible infection will receive standard retreatment plus either laser disinfection or a calcium hydroxide pa…

This study is testing whether a simple online questionnaire can accurately assess a person's risk for gum disease (periodontitis or gingivitis). About 393 adults in Saudi Arabia will fill out the questionnaire and then have a dental exam to compare results. The goal is to see if …

This study aims to see if a special MRI designed for teeth can diagnose jaw joint disorders, tooth infections, and help plan dental implants as well as or better than traditional X-rays. About 470 adults needing dental imaging will get both an MRI and standard X-rays, and the res…

This trial tests whether photobiomodulation (PBM), a type of low-level laser therapy, can reduce pain and improve healing after endodontic microsurgery—a procedure to treat infections at the tip of a tooth root. About 90 adults needing this surgery will receive either real PBM or…

This study compares two types of stitches (NOVOSYN quick and MONOSYN quick) used in gum surgery to see if they heal equally well. About 84 adults having gum surgery will be randomly assigned one of the two stitches. The main goal is to check early healing signs like skin regrowth…

This trial tests whether a custom 3D-printed surgical guide can improve the accuracy of apicoectomy—a procedure to remove the tip of a tooth root after a failed root canal. Participants will have the guided surgery and then report pain and swelling at 1, 3, and 7 days. At 6 month…

This study tests whether placing ibuprofen, nitrofurantoin, or calcium hydroxide inside a tooth after root canal treatment can lower pain. About 111 adults with dead nerves in their back teeth will rate their pain on a 0-10 scale. The goal is to find which medication works best t…

This study tests whether using different nickel-titanium file systems, alone or with an XP-Endo Finisher irrigation device, can reduce pain after root canal treatment. Eighty adults with infected molars will be randomly assigned to one of four groups. Pain levels will be recorded…

This study compares two different irrigation techniques used during root canal retreatment to see which one leads to less pain afterward. About 100 adults with a previous root canal and ongoing infection will take part. The goal is to find a simple way to improve comfort after th…

This study compares two common root canal filling techniques—cold lateral condensation and warm vertical obturation—to see which causes less pain afterward. About 80 adults with infected but pain-free teeth will be randomly assigned to one method. Researchers will measure pain le…

This study tests whether applying a special gel (cross-linked hyaluronic acid) during root-end surgery helps the gums heal faster and reduces pain afterward. About 46 adults with a tooth infection that didn't heal after standard root canal treatment will take part. Half will get …

This study tests whether using a special laser along with standard ultrasonic cleaning can reduce pain and kill more bacteria after a root canal. About 120 adults with infected single-root teeth will be treated and asked to rate their pain. The goal is to find a better way to man…

This study tests a new way to do root canals that skips the manual step of scouting and widening the canal by hand. Instead, dentists use a special rotary file from the start. The goal is to see if this causes less pain after the procedure compared to the traditional method. The …

This study looks at two types of dental sealers used during root canal treatment to see which one leads to less pain afterward. Sixty adults with a painless tooth infection around the root tip will be randomly assigned to receive either a calcium-based bioceramic sealer or a resi…

This study tests whether using a special laser to disinfect the root canal can lower inflammation and pain after a root canal has failed. Fifty-two adults with a failed root canal and a visible infection on X-ray will receive either standard cleaning plus the laser or standard cl…

This study examines a possible connection between gum disease and chronic neck pain. Researchers will compare neck pain intensity and daily disability among adults aged 30-55 with healthy gums, gingivitis, or periodontitis. Participants complete pain scales and questionnaires to …

This study looks at how oral hygiene habits and gum health affect quality of life in 160 adults. Participants will have a dental exam and fill out a questionnaire about how their mouth feels day-to-day. No treatment is given—the goal is simply to understand the connection between…

This study looks at whether using different concentrations of sodium hypochlorite (a type of bleach) during root canal retreatment can change pain levels and certain nerve chemicals in the tooth. Sixty adults needing a repeat root canal will be randomly assigned to receive 1%, 2.…

This study surveys 100 French dentists who treat children to understand why they often choose extraction for non-vital baby teeth, even though effective alternatives like pulpectomy exist. The goal is to collect and analyze their treatment choices, reservations, and decision-maki…

This study tests whether artificial intelligence can predict if a less invasive procedure called full pulpotomy (removing only the infected pulp) will succeed in treating painful molars, compared to standard root canal treatment. Researchers will enroll 58 adults with irreversibl…

This study looks at whether root canal treatment can reduce inflammation markers linked to heart disease in people with stable coronary artery disease and infected tooth roots. Eighty adults will either get immediate root canal treatment or wait three months. Researchers will mea…