Clinical Research Directory

Clinical Investigation Measuring the Long Term Clinical Performance and Safety of Biodentine™ XP in Patients Treated for Coronal Restorative or Endodontic Dental Indications.

The aim of this present study is to collect additional data for the post-marketing follow-up of Biodentine™ XP and measure long-term (up to 10 years) performance and safety of the biomaterial in all its indications.

Comparison of Manual and Mechanical Glide Path Techniques for Measuring Root Canal Length Using Standalone Apex Locator and an Endomotor With built-in Apex Locator.

This study is designed to compare two commonly used methods for measuring the length of the root canal during root canal treatment. Accurate measurement of the root canal is very important because it helps dentists clean, shape, and fill the canal properly, which improves the success of the treatment and reduces the risk of complications. In this study, two different techniques will be evaluated. The first method uses small hand instruments (manual technique) to create a smooth pathway inside the root canal before measuring its length. The second method uses a machine-assisted system (mechanical technique) that creates this pathway automatically. Both methods use special electronic devices called apex locators, which help determine the exact length of the root canal more accurately than traditional X-rays alone. Participants in this study will be patients who require root canal treatment on lower molar teeth. If you agree to take part, you will receive standard root canal treatment similar to routine dental care. The only difference is the method used to prepare the canal and measure its length, which will be randomly assigned. This means neither you nor the dentist will choose the method, ensuring fair comparison. The procedure will include taking dental X-rays, administering local anesthesia, cleaning and shaping the root canal, and filling it after measurement. All steps follow standard dental practices and safety protocols. Your treatment will not be compromised in any way by participating in the study. The purpose of this research is to determine which method is more accurate, efficient, and reliable. The results may help improve future dental treatments by guiding dentists toward better techniques, ultimately benefiting patients through safer and more effective care. Participation in this study is completely voluntary. You have the right to refuse participation or withdraw at any time without affecting your dental treatment. All personal and medical information will be kept confidential and used only for research purposes. There are minimal risks involved, as all procedures are part of routine root canal treatment. You may not receive direct personal benefit, but your participation will contribute to improving dental care for others in the future.

Endodontic Posts Using the CAD/CAM Digital Method.

This study investigates the survival and success rates of endodontic posts exclusively fabricated using the CAD/CAM digital method over a period of 5 years of intraoral use. The objective is to evaluate the efficacy and long-term outcomes of the digital approach compared to traditional techniques, aiming to determine the reliability and precision of CAD/CAM technology in the fabrication of endodontic post restorations.

The Present Study Aims to Follow up on All Root Canal Treatments Performed During the Year 2023 Within the Public Dental Services of the Counties of Jönköping, Kalmar, and Östergötland, Sweden. The Study is Entirely Observational in Nature.

Each year, nearly 200,000 teeth undergo root canal treatment in Sweden, most of them within general dental care. However, studies that evaluate the outcomes of root canal treatments have almost exclusively been conducted at specialist or university clinics, where treatment conditions differ from everyday practice in general dentistry. Moreover, the design of such studies often limits the ability to generalize their findings to routine clinical settings. These earlier studies suggest that root canal treatment is a predictable procedure-about 80-90% of treated teeth become free from infection, 90% of patients experience no pain, and approximately 90% of root-filled teeth remain in the mouth six years after treatment. Still, the results from these studies cannot easily be applied to general dental care. This has been confirmed by large-scale epidemiological studies using X-rays to assess the technical quality of performed root fillings and to detect signs of disease. These studies have shown that many root fillings exhibit technical shortcomings, and a significant proportion of root-treated teeth have persistent infections. The current study aims to increase understanding of the factors that may explain why the results of root canal treatment in general dental practice appear to differ from those in specialist care. Based on epidemiological data, it is estimated that about 35% of teeth treated with root canal therapy in general dental practice still show signs of disease after treatment. What happens to these patients is largely unknown. Evidence suggests that teeth with persistent apical periodontitis rarely cause discomfort, and the condition often goes unnoticed. In the first part of the study, only patients who have already received treatment will be invited to participate, making this a retrospective study. Because it takes several years to evaluate the outcome of a root canal treatment, all patients aged 20 years and older who had a tooth root-filled in 2023 within the Public Dental Services of Jönköping, Kalmar, or Östergötland counties will be offered a free clinical and radiological examination-thus a three-year follow-up. The examination is entirely painless. In the second part of the study, patients with a root-filled tooth showing persistent disease will be offered a five-year follow-up (2026-2031). They will be grouped according to whether they choose to have further treatment or leave the condition untreated. This second phase will therefore constitute a prospective follow-up.

Effect of Different Irrigation Protocols on Postoperative Endodontic Pain and Inflammation

This study aims to improve the postoperative endodontic outcome by assessing the effect of different irrigants on postoperative endodontic pain and their anti-inflammatory effects.

Antibacterial Efficacy and Outcomes of Root Canal Irrigation Methods

This randomized clinical trial aims to evaluate the antibacterial efficacy and treatment outcomes of three different final irrigation protocols during root canal therapy: 2.5% sodium hypochlorite alone, sodium hypochlorite with Passive Ultrasonic Irrigation (PUI), and sodium hypochlorite with XP-Endo Finisher activation. Sixty-six single-rooted teeth with pulp necrosis and apical periodontitis will be randomly assigned to one of the three groups. Antibacterial efficacy will be assessed through Real-Time PCR quantification of total bacterial load and four specific bacterial species before and after treatment. Treatment success will be evaluated clinically and radiographically at 6 and 12 months. The study aims to identify the most effective irrigation strategy for bacterial reduction and healing outcomes.

Intracanal Dexamethasone Extrusion and Postoperative Endodontic Pain

The aim of this research is to assess the effect of intentionally extruding a corticosteroid intracanal solution into the periapical tissues on the postoperative pain after root canal treatment in patients with symptomatic irreversible pulpitis and symptomatic apical periodontitis (SIP/SAP). The main question it aims to answer: Is there an analgesic effect of extruding an intracanal solution of DXA into the periapical tissues in patients diagnosed with SIP/SAP? Researchers will compare dexamethasone to a placebo to see if the extrusion dexamethasone works in reducing post-endodontic treatment pain.

A Study to Assess the Clinical Success of Root Canal Treatment Using Novel Obturation Material.

The goal of this study is prospective, single-arm, non-randomized controlled trial to test the effectiveness, safety and performance of a novel dental obturation material. The main question sit answers is 1. To test the effectiveness of the Endofill device for root canal obturation up to 12-month follow-up period. 2. To test the performance of the Endofill device evaluated with periapical radiographs immediately on completion of procedure. The participants requiring root canal treatment will be treated with obturated using Endofill material and post-treatment follow-up vistis will be conducted for 1 year. This is a single-arm study with no comparison groups.