Clinical Research Directory

Assessment of Early Healing Period of Dental Implants

This prospective cohort study aimed to evaluate, clinically, radiographically, and digitally, the volumetric changes occurring during the early healing period after implant treatment in patients with tooth loss in the posterior regions of the jaws, focusing on the processes of osseointegration and biological width formation.

Do Immediate Digital Workflows Increase Patient Value?

This two-center randomized controlled trial will evaluate whether an immediate digital posterior implant workflow provides greater patient-defined value than a delayed digital workflow in adults requiring single posterior implant rehabilitation. Participants will be randomized 1:1 to immediate implant placement at the time of tooth extraction or to delayed implant placement after approximately 16 weeks of healing following extraction and ridge preservation as indicated. The primary endpoint is oral health-related quality of life assessed longitudinally using the OHIP-14 questionnaire and analyzed as the model-based mean score averaged across the active treatment phase from baseline through definitive crown delivery. Secondary outcomes include workflow-related patient experience, chairside time, number of visits, postoperative pain, buccal contour changes based on intraoral scan-derived volumetric analysis, radiographic marginal bone level changes, implant survival, clinical peri-implant parameters, technical complications, esthetic outcomes, accuracy of guided implant placement, and clinician-reported workflow outcomes.

Randomized Clinical Study Comparing Two Guided Surgery Techniques for Free-end Implant Placement

This is a randomized multicenter clinical study that compares two static guided surgery techniques in free-end partial edentulism. The aim is to compare the accuracy obtained between dento-osseous supported and dento-mucosal supported surgical splints to place dental implants in posterior osseous ridges.

Artificial Intelligence-Guided Versus Manual CBCT Planning for Immediate Implant Placement

This study evaluates whether artificial intelligence (AI)-based analysis of cone-beam computed tomography (CBCT) scans can support clinical decision-making for immediate dental implant placement in molar extraction sites. When a molar tooth is removed, placing a dental implant immediately may reduce treatment time and preserve surrounding bone. However, immediate implant placement is not always possible and depends on the anatomy of the extraction socket, particularly the interradicular septum (the bone between the roots). CBCT imaging is routinely used to assess this anatomy before surgery. Traditionally, radiologists manually evaluate these scans. Recently, AI-based tools have been developed to automatically analyze CBCT images. In this randomized controlled trial, patients requiring molar extraction and potential immediate implant placement will be assigned to one of two planning approaches: AI-guided CBCT assessment or conventional manual CBCT assessment. The operating surgeon will use the assigned planning report to guide treatment decisions. The primary outcome of the study is the feasibility of immediate implant placement, defined as successful implant placement with achievement of primary stability during surgery. Secondary outcomes include surgical time, need for changes to the treatment plan, and implant stability measurements. The goal of this study is to determine whether AI-assisted CBCT analysis performs similarly to, or improves upon, conventional manual radiologic assessment in supporting safe and effective immediate implant placement.

To Compare the Two Implant Placement Protocols to Evaluate Placement Accuracy and Post-operative Healing of the Implant

The goal of this study is to evaluate two commonly utilized surgical guide protocols to determine dental implant placement accuracy compared to pre-operative computerized planning, post-operative healing and bone levels to 12-months post-placement, and patient assessed post-operative discomfort and healing using a visual acuity scale (VAS).

Effect of Bone Graft Material ON Peri-Implant Phenotype .

This prospective three-arm controlled interventional clinical study evaluates the effects of NanoBone alone and NanoBone combined with platelet-rich fibrin (PRF) on peri-implant hard and soft tissue phenotype after dental implant placement. Thirty-nine adult participants requiring dental implant therapy will be assigned to three groups of 13 using a repeating sequential 1-2-3 allocation sequence: implant placement alone (control), implant placement with NanoBone, or implant placement with NanoBone and PRF/CGF membrane. Clinical and radiographic outcomes will be assessed at baseline, immediately after surgery, 8 weeks after surgery, and 4 months after surgery, with an early postoperative assessment of pain, swelling, medication use, and wound healing.

Clinical and Patient-reported Outcomes of Guided Versus Freehand Harvesting Of Positioning of Autogenous Bone Shells

When people lose teeth or have gum disease, the jawbone can shrink over time. This shrinkage makes it difficult for dentists to place dental implants because implants need a strong and stable base of bone. To solve this problem, surgeons often use bone grafting techniques. One of the most reliable ways to rebuild lost bone is called the autogenous shell technique. In this method, very thin plates of bone are taken from another part of the patient's mouth, shaped into a "shell," and fixed into place at the site where bone is missing. The empty space inside the shell is then filled with tiny bone chips, and the whole graft heals into strong new bone over time. Once healed, implants can be placed securely. This technique has been widely studied and is considered highly effective. However, it is not easy to perform. Traditionally, the shells are harvested and positioned by hand, relying heavily on the skill and experience of the surgeon. Even very experienced clinicians face challenges: the shells can break if cut too thin, positioning may take a long time, and results can vary from patient to patient. Patients also report significant discomfort after surgery, including swelling, pain, and difficulty eating and speaking during recovery. In recent years, digital technology has begun to transform oral surgery. Using 3D imaging and computer design, it is now possible to create custom surgical guides and positioning jigs. These guides are printed with 3D printers and act like templates, helping surgeons cut bone in exactly the right size and shape, and place it precisely in the planned position. In implant dentistry, such guides are already used for the accurate placement of dental implants, and studies show they can make surgery faster and safer. However, little is known about whether these guides also improve patient comfort and recovery when used in bone grafting procedures such as the shell technique. This clinical trial has been designed to answer that question. It compares two groups of patients who need vertical bone augmentation before implant placement: Guided group: Patients treated with 3D-printed surgical guides for harvesting and positioning bone shells. Freehand group: Patients treated with the conventional freehand shell technique without guides. By studying both groups, the trial aims to determine whether guided surgery reduces pain, swelling, and recovery problems, and whether it saves time in the operating room. Most importantly, it seeks to put patients' voices at the center by focusing on patient-reported outcome measures (PROMs)-direct feedback from patients about how they feel after the procedure.

Multicenter Clinical Study on the Efficacy and Esthetic Outcomes of Immediate Implant Placement Using the Socket-Shield Technique Versus Conventional Immediate Implantation in the Anterior Maxillary Esthetic Zone

This study plans to enroll no fewer than 48 adult patients who have non-restorable maxillary anterior teeth due to trauma or dental diseases and are candidates for immediate implant placement, meeting the inclusion and exclusion criteria.

Flapless Mini-incision Implant Surgery

evaluate the clinical efficacy of the flapless mini-incision method compared to conventional flap and flapless punch methods

Influence of Timing of Implant Placement on Early Healing Molecular Events

Dental implants have been on the market for several years and they are routinely used to replace single/multiple missing teeth with a high success rate. However, there is still a limited number of studies comparing the influence of timing of implant placement on wound healing. In addition, there is no data available on the signaling pathways and the expression of healing biomarkers involved in the early stages of osseointegration after immediate implant placement (IP) or delayed implant placement (DP). The primary objective of this study is to describe changes in the expression of inflammatory, angiogenesis and osseous biomarkers of saliva at 1, 3, 7, 15 and 30 days and of PICF at 3, 7, 15 and 30 days after immediate implant placement (IP) compared with delayed placement (DP).

Closed Sinus Augmentation With a Calcium Phosphosilicate Putty

The goal of this clinical study is to learn if cone beam computed tomography (CBCT) or 3-dimensional x-ray can help to let the investigator know if dental implant placement can be done after performing closed sinus surgery. The study will look at the structure of your gum where the implant will be placed after performing the surgery using 3-D x-ray and compare that to how the structure of your gum looks 6 months later. The 3-D imaging will happen after standard of care surgery to prepare your gum for an implant and then 6 months later to verify that the site is ready for the implant.

Free Soft Tissue Grafts FSTG) Using Autograft Palatal Donor Tissue vs. Xenograft Collagen Matrix (Zderm™)

Participant in this study are asked to participate because they have teeth or dental implants that were identified as having very little gum tissue and would benefit from gum tissue graft surgery. This study has 2 groups that differ only in the material that will be used at the graft site: * Gum tissue taken from the patient's own palate (standard of care group) * Commercially available collagen matrix derived from porcine (pig) Achilles tendon (FDA-approved for the surgery done in this study). Both materials have been in use in dental practices for many years, but no studies have directly compared the outcomes between palatal tissue and the porcine collagen matrix we will use in this study. Participants will be randomized into one of the 2 groups using sealed envelopes (the process is like flipping a coin). All the study visits will take place during regular dental appointments that would be scheduled even if not participating in this research.

Clinical Performance of Nobel N1 System

The purpose of the study is to evaluate whether N1 dental implants are successful when a final crown is placed on them at 6 weeks from implant placement surgery.

Comparative Assessment of Primary Stability in Double, and Triple Thread Implant Designs

The goal of this randomized clinical trial is to compare the primary stability of double-thread and triple-thread dental implant designs in patients requiring implant placement in the posterior maxilla. The main question it aims to answer is whether implant thread design influences primary implant stability in the posterior maxilla. Participants will be randomly assigned to one of two groups. Group A will receive a double-thread dental implant, while Group B will receive a triple-thread dental implant. Primary implant stability will be assessed at the time of implant placement using insertion torque and resonance frequency analysis (ISQ).implant stability using ISQ will also be evaluated at 3 months

Peri-implant Soft Tissue Phenotype and Early Marginal Bone Loss After Dental Implant Placement

This prospective observational cohort study evaluated the relationship between peri-implant soft tissue characteristics and early marginal bone loss following dental implant placement. The study included patients receiving bone-level implants in posterior edentulous regions. Keratinized mucosa width, supracrestal tissue height, and mucosal thickness were measured at the time of implant placement. Marginal bone levels were assessed using standardized intraoral radiographs obtained at baseline and three months after implant placement. The primary aim was to determine whether these peri-implant soft tissue dimensions were associated with marginal bone loss during the early healing period.

Chart Review: Comparing the Position and Tilt of Dental Implants Versus Those of Natural Teeth

Background: When placing a dental implant, it is not always possible to place it exactly in the same position as the tooth that it replaced. That might be because of how the gums and mouth are shaped, since some bone is always lost after a tooth is extracted. Researchers want to study the records of people who have had dental implants. They want to check to see how much difference there is between how the implant is positioned and how the same tooth on the other side is positioned. They also want to compare how the implant is positioned compared to the tooth it replaced, when that is possible in the dental record. Study design: This study will not enroll any participants. The researchers will search the database of patient records at the study clinic to find people who have had dental implants of a single molar tooth. Then they will look at them to find records that include good images that they can use to compare the implant and tooth positions. Researchers will then analyze the findings and write a review article.

Tissue Preservation in Immediate 1C Implants Using an Anatomical Prefabricated Healing Abutment

The goal of this clinical trial is to evaluate whether an anatomical prefabricated healing abutment (AHA) improves tissue preservation and clinical outcomes following immediate implant placement after tooth extraction in adults. Although immediate implant placement is a well-established treatment for replacing missing teeth, healing can result in changes to the surrounding bone and soft tissues that may affect the esthetic appearance, function, and long-term stability of the implant-supported restoration. This study will compare an anatomical healing abutment, designed to mimic the natural tooth emergence profile and support peri-implant tissues during healing, with a conventional healing abutment. The primary objectives are to determine whether the AHA better preserves soft tissue contours and alveolar bone, improves implant positioning accuracy and tissue stability during healing, and differs from a conventional healing abutment in complications or adverse events. Eligible participants will be adults requiring extraction of a hopeless tooth in the posterior maxilla or mandible who are suitable candidates for immediate implant placement. Following tooth extraction and implant placement, participants will receive either an anatomical prefabricated healing abutment or a conventional healing abutment and will return for scheduled follow-up visits over approximately 12 months to assess healing, implant stability, and changes in the surrounding hard and soft tissues. Researchers will collect clinical measurements, digital intraoral scans, photographs, and radiographic images throughout the study. Additional research imaging will be used to generate three-dimensional models to measure tissue volume changes and implant position accuracy. Specialized software will compare changes between the two groups over time. Safety will be evaluated by monitoring participants for complications, discomfort, inflammation, implant-related problems, and other adverse events throughout follow-up. All procedures will be performed by trained dental professionals using established clinical protocols. The results may improve understanding of how healing abutment design influences tissue preservation after immediate implant placement and help optimize future implant therapy by supporting better functional, esthetic, and long-term outcomes.

Impact of Hyaluronic Acid and Bone Graft on Peri-Implant Tissue

This randomized controlled clinical trial aims to evaluate the effect of hyaluronic acid (HA) and particulate bone graft on the peri-implant tissue phenotype in patients receiving dental implants. Healthy adult participants requiring dental implant placement will be randomly allocated into one of three equal groups (12 implants per group): Group 1 will receive dental implants combined with hyaluronic acid gel (Gengigel); Group 2 will receive dental implants combined with both hyaluronic acid and particulate bone graft; and the control group will receive dental implants alone. Clinical and radiographic assessments will be performed using a customized measurement stent to ensure standardized evaluations at baseline, immediately postoperatively, and at 8 and 16 weeks of follow-up. The primary and secondary outcomes include alterations in ridge width, keratinized tissue width/thickness, radiographic soft tissue height, and marginal bone height. The study aims to determine whether the adjunctive use of hyaluronic acid and bone grafts enhances the quality of the peri-implant soft and hard tissue phenotype.

Flap Vs Flapless Technique for Delayed Implant Placement in the Maxillary Esthetic Zone

This randomized comparative clinical trial aims to evaluate the clinical, radiographic, and esthetic outcomes of flap versus flapless techniques for delayed dental implant placement in the maxillary esthetic zone. Twenty patients requiring implant placement in the maxillary anterior or premolar region will be randomly allocated into two equal groups. Group I will undergo implant placement using the conventional flap technique, while Group II will receive implant placement using the flapless technique. Clinical outcomes including postoperative pain, edema, surgical insertion time, and implant stability will be assessed. Radiographic evaluation will include peri-implant bone quantity, bone quality, and crestal bone loss. Follow-up examinations will be performed immediately after surgery and at 1, 3 and 6 months postoperatively.

Effect of Systemic Vitamin D on Dental Implant Osseointegration

The primary goal for any oral implantologist is to obtain satisfactory healing and long-term treatment success. Osseointegration is the key to dental implant success8 and is required to achieve direct structural and functional connection between living bone and the surface of a load-bearing artificial implant, is critical for the long-term success of dental implants. Successful dental implant therapy relies on achieving proper osseointegration, which ensures a stable structural and functional bond between the implant surface and surrounding bone. Although dental implants show a high overall success rate of around 95%.

Effects of Implant Placement Depth (4 mm Versus 6 mm) on Crestal Bone Stability in Immediate Implant Placement: A Clinical Study With 1-Year Post-Restorative Results

The aim of a study was to analyze the effect of implant placement depth (4 mm versus 6 mm below the mid-facial gingival margin) on marginal bone loss (MBL) around implant and implant stability during immediate implant placement after tooth extraction. Clinical trial was conducted involving 35 patients requiring immediate implant placement after tooth extraction. Implants were placed either 4 mm (control group) or 6 mm (test group) below the mid-facial gingival margin. Primary outcome was deemed to be radiographic assessment of marginal bone level from periapical radiographs. Secondary outcome was implant stability quotient registration using resonance freaquency analyzer. The null hypothesis is that there is no significant difference in peri-implant marginal bone loss between implants placed at 4 mm depth versus 6 mm depth relative to the buccal gingival margin during immediate implant placement.

Influence of Alveolar Bone Drilling and Anatomical Position on Integration

The goal of this clinical trial is to learn if alveolar bone drilling and anatomical position of an immediately placed dental implant has influence on the primary stability, osseointegration and function. It aims to answer these questions: * Does absence of alveolar drilling before implant placement give the same result as traditional osteotomy with apical drilling? * Is palatinal root position of implant as succesful as central position? Researchers will compare crestal bone levels and primary stability of the implant after insertion in the groups. Subjects will be assigned to groups, acoording to clinical situation. Study groups: 1. Dental implants will be placed in the extraction socket with an apical osteotomy. 2. Dental implants will be placed in the extraction socket without performing an osteotomy. 3. Dental implants will be placed in the centre of the extracted maxillary molar socket. 4. Dental implants will be placed into the palatal root socket of the extracted maxillary molar.

Comparative Evaluation of Xenograft Alone and Sticky Bone in Sinus Lift With Concurrent Implant Placement

Introduction \& Background: Modern dental implantology offers solutions for patients with edentulism in the maxillary arch, where sinus pneumatization and alveolar ridge atrophy are common conditions. This often requires sinus floor elevation and bone grafting prior to implant placement. Techniques such as the lateral window approach and osteotome-mediated sinus floor elevation aim to achieve sufficient vertical bone height for successful implant placement. Autogenous bone grafts have long been considered the gold standard; however, their use is associated with limitations including donor site morbidity and graft volume loss, which has encouraged the exploration of alternative grafting materials. Sticky bone is a term used in oral surgery and implantology to describe a cohesive, moldable, and adhesive bone graft material prepared by combining particulate bone graft material (xenograft) with biological additives such as Platelet-Rich Plasma (PRP) or Platelet-Rich Fibrin (PRF). Platelet-Rich Fibrin (PRF), which is used in the present study, is an autologous leukocyte and platelet-rich fibrin matrix containing cytokines, platelets, and stem cells. PRF acts as a biodegradable scaffold that promotes microvascularization and guides epithelial cell migration. In addition, PRF may serve as a carrier for regenerative cells and allows sustained release of growth factors over a period ranging from one to four weeks, thereby enhancing the wound healing environment. Objectives: The study aims to assess the clinical efficacy of sticky bone as a bone graft material in sinus lift procedures compared with conventional xenograft materials. Methods: A randomized clinical trial will be conducted comparing two groups: one receiving sticky bone with simultaneous implant placement and another receiving xenograft with implant placement. Preoperative assessment will include Cone Beam Computed Tomography (CBCT) imaging, followed by postoperative monitoring to evaluate bone height and implant stability. Study Design: Patients fulfilling the inclusion and exclusion criteria will be recruited from the dental clinic. Written informed consent will be obtained from all participants after explanation of study procedures, potential risks, and expected benefits. Eligible patients will be randomly allocated into two equal groups using a computer-generated randomization program: Group 1 (Sticky Bone group) and Group 2 (Xenograft group). Statistical Analysis: Sample size calculation was performed using G\*Power software version 3.1.9.7. The statistical test family selected was the t-test. Based on data from a previous study, a total of 16 participants were required to achieve a study power of 80% with a significance level (alpha) of 0.05. To compensate for potential dropouts, the total sample size was increased to 18 participants (9 patients per group).

Assessment of Soft Tissue Thickness Over Zygomatic Implants in Atrophied Maxilla Covered With Buccal Fat Pad vs. Palatal Pedicle Flap

Background and Rationale The rehabilitation of the severely atrophied maxilla utilizing zygomatic implants is a highly predictable and effective treatment modality. However, managing the peri-implant soft tissue in these complex cases remains a significant clinical challenge. Because zygomatic implants frequently emerge through thin, non-keratinized, and mobile alveolar mucosa rather than thick, attached gingiva, the peri-implant environment is highly susceptible to complications. Inadequate soft tissue thickness can lead to mucosal recession, exposure of the implant collar, plaque accumulation, and ultimately peri-implantitis, which threatens the long-term success of the prosthesis. To mitigate these risks and achieve an optimal permucosal seal, soft tissue augmentation is often required. Vascularized soft tissue grafts are preferred in these compromised anatomical sites due to their robust blood supply and enhanced healing capacity. The Buccal Fat Pad (BFP) flap is a well-documented and frequently utilized technique for this purpose; however, its volume can be unpredictable, and it may be unavailable due to prior surgeries or anatomical deficiencies. Therefore, evaluating robust alternatives, such as the Palatal Pedicle Flap (PPF)-which utilizes the thick, keratinized palatal mucosa-is critical for optimizing surgical outcomes. Study Design and Methodology This study is structured as a prospective, randomized controlled clinical trial utilizing a split-mouth design. The split-mouth approach is strategically chosen to eliminate inter-subject biological and immunological variability, allowing each patient to effectively serve as their own control. Patients presenting with a severely resorbed maxilla requiring bilateral zygomatic implant placement will be enrolled. Following successful implant placement, the right and left maxillary quadrants will be randomized. One side will be assigned to receive soft tissue augmentation using the standard Buccal Fat Pad (BFP) flap, while the contralateral side will be assigned to receive the Palatal Pedicle Flap (PPF). Surgical Intervention Overview All surgical procedures will be performed under appropriate anesthesia following standard sterile protocols. For the BFP side: The buccal fat pad will be accessed via a vestibular mucosal incision, carefully bluntly dissected, mobilized, and advanced over the zygomatic implant collar without tension. For the PPF side: A palatal pedicle flap will be meticulously outlined, elevated with its vascular supply intact, rotated, and adapted around the contralateral implant collar. Both flaps will be secured using appropriate resorbable sutures to ensure tension-free primary closure and optimal tissue adaptation around the implant abutment interface. Post-operative care will adhere to standard institutional guidelines, including the prescription of appropriate analgesics, antibiotics, and antimicrobial mouth rinses. Clinical Significance By systematically comparing the healing trajectories, tissue stability, and functional outcomes of the BFP and PPF techniques over a 6-month period, this trial aims to provide definitive, evidence-based guidance for soft tissue management in zygomatic implantology. Furthermore, it seeks to validate the PPF as a reliable and predictable reconstructive alternative in clinical scenarios where the buccal fat pad is deemed insufficient or inaccessible.