Clinical Research Directory

Effect of Combined Root Canal Therapies in Mandibular Molars With Coexistent Mature and Immature Apices on the Healing Outcome

Recent advancements in dentistry are driven by the development of dental materials and therapies that support tissue regeneration, including the application of bioactive, biocompatible calcium silicate-based materials like mineral trioxide aggregate (MTA), Biodentine, and bioceramic sealers/putties, which facilitated the integration of different treatment protocols. These root canal treatment protocols can be implemented in the same tooth based on the specific stage of root development, such as combining conventional root canal treatment in the root with a closed mature apex, and regeneration or apical plug in the root with an open immature apex, thereby gaining the benefits of each protocol with a minimally invasive, more conservative approach. No research studies have been published evaluating the effect of combined different root canal treatment protocols on the management of molars with coexistent mature and immature apices. This study will evaluate the outcomes of combined root canal therapies in mandibular molars with coexistent mature and immature apices.

Effect of Apical Patency on Periapical Lesion Healing

This non-randomized clinical study aims to evaluate the effect of apical patency during root canal treatment on the healing of periapical lesions in maxillary anterior teeth. Participants will be assigned to either an apical patency group or a non-patency group. Changes in periapical lesion volume will be assessed using cone-beam computed tomography (CBCT) one year after treatment. The study aims to provide an objective volumetric assessment of the potential contribution of apical patency to periapical healing.

Sealer-Based Obturation With AH Plus Bioceramic Sealer vs. Warm Vertical Compaction With AH Plus

The goal of this clinical trial is to assess the efficacy and outcome of sealer-based obturation (SBO) using a new calcium silicate sealer in comparison with warm vertical compaction (WVC) using a resin-based sealer, which is the current gold standard.

Effect of Targeted Endodontic Microsurgery on Quality of Life and Healing on Mandibular Molars

Targeted endodontic microsurgery represents precise and advanced approach to resolving persisting chronic periapical periodontitis after non- surgical root canal treatment. This specialised procedure involves accessing the root tip of the tooth under high magnification using dental operating microscopes and employing microsurgical instruments to remove infected or inflamed tissue, as well as any pathological lesions present in the periapical region. Targeted Endodontic Microsurgery is useful for osteotomy and root- end resection when exacting control of depth, diameter, and angulation of osteotomy and root end resection is necessary. Using a CBCT(cone beam computed tomography) designed 3D - printed surgical guideis a more accurate method for access to the apical portion of the root during surgical endodontics compared with a "freehand" CBCT - approximated conventional method. These guided have the potential to increase accuracy and precision and to reduce intraoperative time as well as postoperative complications. Additionally, it provides a viable treatment option for patients who may not be candidates for traditional root canal therapy or retreatment due to anatomical complexities or previous treatment failures.

Comparison of Clinical Outcomes Between GentleWave® and Biolase®

Introduction: In the US, 15 million root canal treatments (RCTs) are carried out annually. Success rates decrease with conventional chemo-mechanical root canal preparation techniques used on teeth with periapical radiolucencies associated with bacterial presence. New irrigation modalities, such as the GentleWave® System (GWS) and Waterlase iPlus® (WL), have been developed to overcome limitations and improve RCT success rates. Hypotheses: (1) GWS and WL provide superior clinical outcomes compared to conventional RCT using passive ultrasonic activation (PUI). (2) GWS and WL are acceptable treatment modalities for clinicians and patients. Aims: (1) Estimate probability of success of GWS, WL, and conventional RCT with PUI. (2) Evaluate clinician and patient experiences of the different techniques.

Clinical and Radiographic Success of Calcium Hydroxide-Iodoform Paste Versus Modified Triple Antibiotic Paste for Necrotic Primary Molars in Children

This randomized clinical trial aims to compare the clinical and radiographic success of calcium hydroxide-iodoform paste and modified triple antibiotic paste when used for the treatment of necrotic primary molars in children using the lesion sterilization and tissue repair (LSTR) technique. The study will include children aged 4-7 years with restorable necrotic mandibular second primary molars. Participants will be randomly assigned to receive LSTR treatment with either calcium hydroxide-iodoform paste or modified triple antibiotic paste. Clinical and radiographic findings will be assessed during follow-up over 12 months to determine the success of each treatment. The study hypothesis is that there will be a difference in the clinical and radiographic success between the two treatment materials when used with the LSTR technique

Detection of Periapical Lesions on Dental Panoramic Radiographs Based on Artificial Intelligence

Dental periapical damages can have various reasons and is reflected by a radiolucent lesion on complementary imaging: angulated retro-alveolar (RA) radiographs, dental panoramic radiographs, and three-dimensional imaging such as computed tomography (CT) or cone-beam computed tomography (CBCT). For the radiographic detection of these deep periodontal lesions, the dental panoramic represents a first approach commonly performed with relatively low radiation. The investigation can be followed by retroalveolar radiology imaging that are more localized and more precise. However, using these techniques, the detection rates of these lesions are low (20% and 36% respectively), it is necessary to use three-dimensional tomographic investigation to be more discriminating (69%). The gold standard imaging for detection of these lesions is CBCT followed by retroalveolar radiography (\~2x less sensitive than CBCT) and panoramic radiography (\~2x less sensitive than RA). Although not a full-thickness radiograph, the dental panoramic has the advantage of being more commonly performed while being less radiating than CBCT and giving a global view of the dental arches on a single image. The detection of periapical lesions is done after a clinical assessment and a visual appreciation of the complementary examinations. The aim of this project is to improve the detection of periapical lesions, by developing an algorithm able to identify them on a panoramic dental radiograph. This algorithm is based on a deep learning system trained with reference data including panoramic dental imaging and CBCT with an acquisition interval of less than 3 months. The model is based on a previous work, will improve the quality of the initial data (using CBCT), using innovative artificial intelligence algorithms (transfer learning).

Calcium Silicate Sealer-based Obturation in Root Canal Retreatment

This study will evaluate the outcome of calcium silicate sealer-based obturations in root canal retreatment.

Evaluation of Post Operative Pain After Using Intracranial Cryotherapy During Single Visit RCT

A total of 60 patients presenting with single-rooted teeth exhibiting symptomatic apical periodontitis were subjected to a randomized allocation into two groups of 30 each. Irrigation was done using 3% sodium hypochlorite for 5 seconds in all 60 teeth. Group 1 underwent final irrigation utilizing normal saline at room temperature. Group 2 received final irrigation using normal saline refrigerated between 2-5°C. Pain levels were assessed and recorded before the procedure and at 24 and 48-hour time intervals.

Mineral Trioxide Aggregate (MTA) vs Gutta-Percha for Non-Surgical Endodontic Retreatment in Teeth With Apical Lesions

The main objective of this study is to compare the healing rate of periapical lesions after non-surgical endodontic retreatment in teeth obturated with gutta-percha versus those obturated with mineral trioxide aggregate (MTA), with a 12-month follow-up. Secondary objectives include evaluating differences between groups in healing time, postoperative pain, and tooth discoloration.

Evaluation of Revitalization Success Using i-PRF in Non-Surgical Root Canal Retreatment

The goal of this randomized controlled clinical trial is to determine whether regenerative endodontic treatment can improve healing outcomes in teeth with apical periodontitis following failed root canal treatment. The study includes adult patients who require non-surgical root canal retreatment due to persistent periapical lesions. The main questions it aims to answer are: Does regenerative endodontic treatment improve periapical healing compared with conventional non-surgical root canal retreatment? Does regenerative treatment increase long-term treatment success and tooth survival? Researchers will compare conventional non-surgical root canal retreatment with regenerative endodontic treatment using injectable platelet-rich fibrin (i-PRF) to see if the regenerative approach results in better clinical and radiographic outcomes. Participants will: Be randomly assigned to receive either conventional retreatment or regenerative endodontic treatment. Undergo clinical and radiographic evaluations over a two-year follow-up period. Be assessed for pain, sensitivity, pulp vitality, hard tissue formation, and periapical healing.

Survival and Success of Two Different Filling Techniques

This randomized clinical study analysed the clinical use of a new bioceramic premixed CaSi-containing sealer in association with a warm carrier-based technique or a traditional epoxy resin based sealer. Methodology: Healthy patients requiring root canal treatments were enrolled. Periapical X-rays were taken preoperatively, after root canal filling and after 1, 6, and 12 and 24 months. Two evaluators assessed the Periapical Index (PAI) and the sealer extrusion. The healing rate and survival rate were also evaluated. Barnard test was used to assess the relationship of each potential prognostic factor with periapical index (PAI) at 12-month follow-up. The significance level was set at 0.05.

Role of GTR on Healing Outcome & Quality of Life in Combined Endo Perio Lesions With Communication

The recovery of periapical defects linked to periodontal communication frequently yields less satisfactory results. Numerous studies and case reports have highlighted the notable success achieved through the application of guided tissue regeneration techniques. More recently, autologous platelet concentrate plug \& placental membrane have emerged as a treatment option for addressing such lesions. Nevertheless, there has been no study using PRF-Medium with ACM membrane on the healing of aforesaid lesion \& quality of life assessment.

Postoperative Pain in Photodynamic Therapy Using Curcumin As a Photosensitizer

In endodontics, various irrigation solutions are used to achieve antibacterial efficacy within the root canal. The antibacterial effect of curcumin-containing root canal solutions, when combined with photodynamic therapy, has been demonstrated in several studies. However, no research has specifically examined their effect on postoperative pain. The aim of this study is to investigate the impact of using a curcumin solution in combination with photodynamic therapy as the final irrigation solution on postoperative pain.