- JapaneseEnglish
It is my great pleasure to welcome you to the 2026 ICOI (International Congress of Oral Implantologists) Japan Chapter Annual Meeting and Scientific Congress, which will be held on November 14–15, 2026, at Bellesalle Shinjuku South Exit in Tokyo, Japan.
In recent years, implant dentistry has advanced remarkably through innovations in digital technology, biomaterials, and clinical techniques, enabling safer and more predictable treatment than ever before. At the same time, Japan has become the world's leading super-aged society, and the role of implant dentistry continues to evolve. Today, it is more important than ever to provide treatment that considers each patient's overall health, quality of life, and long-term oral function.
The theme of this year's congress is： "Minimalism in Implant Dentistry – What Do Patients Really Want?"
Implant dentistry is not simply about performing increasingly sophisticated procedures. Rather, it is about identifying what truly benefits our patients and delivering treatment that is appropriate, evidence-based, and minimally invasive while avoiding unnecessary intervention.
This congress will bring together distinguished clinicians and researchers from Japan and around the world to discuss the future of implant dentistry from a wide range of perspectives, including digital workflows, minimally invasive treatment, prosthetic design, and long-term clinical outcomes. We also hope this meeting will provide an opportunity to reflect on the significance of implant therapy in a super-aged society and further promote patient-centered implant care.
Furthermore, we hope this congress will serve as a valuable platform for learning, collaboration, and professional networking among dentists, dental hygienists, dental technicians, and students.
We sincerely look forward to welcoming you to Tokyo and sharing an inspiring and memorable scientific meeting with all of you.
Chairman of the 2026 ICOI International Congress of Oral Implantologists Japan Chapter Academic Conference
/ Board Member of ICOI JAPAN (Medical Corporation Smile & Wellness)
Seiji Aruga
Sinus lift procedures are widely performed in implant treatment of the posterior maxilla. In recent years, graftless sinus lift using osseodensification with Densah® Burs has gained increasing attention as an approach that eliminates the need for bone grafting materials.
In this hands-on seminar, participants will learn the fundamental concepts and surgical techniques of this approach while gaining practical experience in the proper use of Densah® Burs and techniques involving extra-wide, short implants.
Participants will also practice a simple approach using a trephine bur for cases with an extremely thin residual bone height beneath the maxillary sinus.
Based on the concept of Minimalism, this seminar is designed to provide participants with the knowledge and practical skills needed to perform sinus lift procedures in a less invasive and more predictable manner.
Zygoma implants are an effective treatment for cases of severe maxillary bone resorption, and at first glance, the procedure may appear to be highly invasive. However, it also aligns with the concept of “Minimum Intervention,” as it avoids unnecessary bone grafting and, when performed under an appropriate treatment plan, can reduce the burden on the patient. As with the All-on-4 technique, success requires a prosthetic design that takes into account speech, ease of cleaning, aesthetics, and functionality, based on the Facial-Driven Concept and a prosthetically driven treatment plan. The goal of zygoma implants is not simply “being able to place them.” Treatment can only be considered successful if it is minimally invasive, functions effectively over the long term, and provides comfort to the patient. In this workshop, participants will gain a practical understanding of the anatomy surrounding the zygoma and practice basic placement techniques, while also receiving an explanation of indications and other relevant topics.
Using models, participants will practice filling extraction sockets with bone graft material, placing membranes, and performing soft tissue grafting using the VISTA technique.
Contemporary dentistry continues to evolve rapidly with advances in digital technology. Implant dentistry, in particular, has undergone significant transformation across the entire treatment process—from examination and diagnosis to surgical procedures, prosthetic treatment, and laboratory workflows—with clinical protocols continuing to change on a daily basis.
For patients ranging from those with single-tooth or multiple-tooth defects to those with complete edentulism, numerous factors must be considered when planning implant placement following examination and diagnosis. From a surgical perspective, these include the timing of tooth extraction, implant placement depth and position, the timing of loading and functional loading, bone augmentation, and the need for soft-tissue management. At the same time, prosthetic concepts have also evolved substantially, including guided surgery planning, the selection between cement-retained and screw-retained restorations, the use of screw-retained abutments (SRAs) as intermediate components, and the design of subcritical and critical contours extending from the subgingival region.
Furthermore, the introduction of three-dimensional facial scanning and the development of various software platforms, such as SmileCloud, have enabled the integration of intraoral scanning (IOS) and CBCT data. As a result, facial-driven examination and diagnosis have become increasingly practical and are now being incorporated into various stages of clinical treatment.
In this presentation, I will review the evolution of current concepts across these different areas and discuss how treatment protocols have changed in contemporary implant dentistry. I will also address the importance of interdisciplinary collaboration with dental technicians and how this collaboration can be integrated into the modern digital workflow.
Tired of screws and the complex sculpting of emergence profiles? Are you merely fixing prosthetic mistakes, or proactively preventing them? Traditional implant prosthetics demand multiple abutment types, often complicating restorative procedures. This presentation introduces a paradigm shift: a universal, friction-retained conometric concept serving as the ultimate "Total Solution." By utilizing a standardized "one abutment one time" approach, clinicians can predictably manage soft and hard tissue thickness and depth to optimize emergence profiles across various implant positions. This lecture demonstrates the reliable application of friction-retention across a comprehensive clinical scope, from single Acuris crowns and short-span bridges to fixed full-arch prostheses (FP1-FP2) utilizing immediate welding. We will also highlight the novel "OneDayWall Technique" (FP3), featuring a titanium framework completed 20 minutes post-surgery that uses permanent denture material finished in 24 hrs for effortless removal and maintenance. Furthermore, the conometric application extends seamlessly to implant-assisted removable prostheses (RP4-RP5). By completely eliminating screws and cements, this universal workflow eradicates cement-related peri-implantitis and mechanical screw loosening. Ultimately, it drastically simplifies clinical inventory and predictably solves diverse prosthetic challenges in modern implantology.
Implant prosthodontics has traditionally focused on achieving reliable retention of the restoration. However, as implant therapy has become a long-term treatment modality, prosthetic priorities are shifting beyond retention toward retrievability, biological safety, maintainability, and long-term clinical outcomes. Cement-retained restorations offer esthetic and positional flexibility, but residual cement and limited retrievability may compromise long-term management. Screw-retained restorations provide predictable retrieval, yet their application can be restricted by implant angulation, restorative space, and the location of the screw-access channel. These limitations have encouraged the development of alternative cementless and mechanically retained prosthetic concepts. This lecture will review conventional retention strategies and introduce emerging prosthetic solutions through clinical cases. Particular emphasis will be placed on implant angulation, available restorative space, emergence profile, retrievability, and the management of biological and mechanical complications. The goal of modern implant prosthodontics is no longer simply to retain a restoration, but to design a prosthesis that supports peri-implant health, simplifies maintenance, and enables predictable long-term management.
The Sinus Optimization Strategy (SOS) proposes a streamlined, graftless approach to sinus elevation designed to reduce complications, shorten healing time, and enhance predictability in implant dentistry. This concept focuses on maximizing the natural osteogenic potential of the Schneiderian membrane and surrounding sinus walls, allowing clinicians to achieve vertical bone gain without the routine use of grafting materials. By emphasizing atraumatic membrane handling, precise pre-operative diagnostics, and controlled intra-sinus space creation, SOS reframes the sinus lift as a biologically driven process rather than a graft-dependent procedure. Clinical observations suggest that minimizing foreign materials may reduce postoperative inflammation, membrane perforation risk, and graft-related morbidity, while still supporting stable implant integration. The SOS framework provides clinicians with a simplified, biologically conservative pathway for managing posterior maxillary atrophy, one that prioritizes patient comfort, procedural efficiency, and long-term implant success.
Digital dentistry has transformed full-arch implant rehabilitation, enabling clinicians to deliver faster, more predictable, and highly esthetic outcomes. This lecture presents a fully digital FP1 All-on-4 workflow designed to provide patients with fixed teeth within 24 hours of implant placement while preserving a natural emergence profile without the use of artificial gingiva. The presentation will cover key principles in patient selection, prosthetically driven implant positioning, digital data acquisition, immediate loading, and the integration of surgical and restorative workflows. Particular emphasis will be placed on achieving accuracy and passive fit in full-arch digital impressions, optimizing the FP1 prosthetic design, and maintaining minimal bone reduction whenever clinically appropriate. Through clinical cases, participants will explore how digital technologies can streamline the treatment sequence from diagnosis and implant placement to the delivery of an immediate fixed provisional restoration within 24 hours. The lecture will also discuss clinical challenges, limitations, and practical strategies for incorporating an FP1 digital workflow into everyday full-arch implant practice.
Implant therapy has long been widely accepted as a highly predictable treatment option for replacing missing natural teeth. Nevertheless, complications associated with implant treatment remain relatively common. To achieve long-term success in implant therapy, it is essential to analyze various risk factors from multiple perspectives and develop an appropriate treatment plan. In particular, accurate assessment of the characteristics and conditions of the hard and soft tissues surrounding implants—and their optimization when necessary—is crucial for achieving stable, long-term treatment outcomes. In this lecture, clinical cases will be presented together with scientific evidence to discuss how hard and soft tissues can be predictably improved to optimize the long-term prognosis of implant therapy. The presentation will also highlight the key biological and clinical principles that clinicians need to understand in order to achieve these goals.
Advances in digital technology have dramatically improved the accuracy and efficiency of diagnosis, treatment planning, surgery, and prosthetic fabrication in full-arch implant treatment. However, simply introducing digital equipment is not enough to achieve high patient satisfaction or long-term success. To realize truly predictable full-arch implant treatment, a “prosthetically driven” treatment plan—in which prosthetic design is developed with consideration for speech and oral hygiene, and implant positions are determined based on that prosthetic plan—is essential. Furthermore, this prosthetic design must be formulated based on the “Facial-Driven Concept,” which prioritizes harmony with the patient’s facial appearance.
In this lecture, we will introduce a digital workflow that integrates Face Scan, CBCT, intraoral scanners, photogrammetry, and dynamic navigation, and explain the diagnostic and treatment strategies for FP1, FP2, and FP3, respectively. Furthermore, by viewing treatments ranging from All-on-4 to zygoma implants as a unified concept, we will present clinical key points—supported by case examples—for achieving aesthetics, functionality, ease of cleaning, articulation, and long-term stability.
Through these presentations, we will propose a full-arch implant treatment strategy that maximizes the use of digital technology and is based on both Facial-Driven and Prosthetically Driven concepts, ensuring high predictability and patient satisfaction.
In the prosthodontic treatment of patients with multiple missing teeth, removable dentures have traditionally been the standard treatment option. In recent years, however, advances in implant fixtures, abutments, and superstructures, together with the development of digital transformation (DX) and CAD/CAM technologies, have broadened the indications for implant-supported prosthetic treatment.
Nevertheless, in patients with severe resorption of the jawbone and alveolar ridge or a reduced amount of keratinized mucosa, it may be difficult to achieve adequate functional and esthetic rehabilitation with fixed prostheses alone. In such cases, removable implant prostheses, including implant overdentures (IODs) and implant-assisted removable partial dentures (IRPDs), offer several advantages. These include greater flexibility in artificial tooth arrangement and denture-base design, improved support, bracing, and retention, reduced stress concentration, enhanced cleansability, and greater ease of future repair and adjustment.
This presentation will introduce cases in which fixed prostheses were difficult to apply, as well as cases in which favorable functional and esthetic outcomes were achieved with IODs and IRPDs. Through a review of clinical examinations, diagnostic findings, treatment planning, and follow-up outcomes, the presentation will discuss the criteria for selecting between fixed prostheses and removable implant prostheses.
In recent years, the rapid adoption of intraoral scanners (IOS) has led to a significant shift in laboratory workflows from analog to digital dentistry. This change is not merely a replacement of traditional methods with digital ones; when utilized appropriately, it offers numerous benefits, including a reduction in the number of patient visits, less burden on patients, and improved treatment accuracy.
In particular, “Superimpose”—one of the major advantages of digital technology—is extremely useful in implant prosthodontics, enabling greater efficiency and higher precision in the prosthetic process. In this lecture, we will explain, using clinical examples, a method for achieving high-precision implant prosthodontics while reducing the burden on patients and shortening treatment time by combining digital technology with provisional restorations to streamline and optimize the prosthetic workflow.
Minimalism is a philosophy that seeks to eliminate ornamentation and unnecessary elements to the greatest extent possible, pursuing only what is essential. It is no exaggeration to say that minimalism has become a fundamental concept underpinning modern healthcare, including dentistry. Digital technology can also be regarded as one of the key elements supporting this concept.
In implant dentistry, the most fundamental and universal principle is to begin by “placing the appropriate implant in the appropriate position with appropriate primary stability.” Implant design plays a significant role in achieving this critical first step.
In other words, implant selection should be considered an integral part of diagnosis. An inappropriate choice of implant can ultimately determine the success or failure of a clinical case.
In recent years, guided implant surgery has become increasingly common. Among younger dentists in particular, it is not unusual to hear that implant placement is difficult or even impossible without a surgical guide. However, during implant surgery, clinicians may encounter discrepancies in the surgical guide or situations in which the implant cannot be placed exactly as digitally planned. When such complications arise, dentists experienced in implant therapy must possess the ability to transition to a freehand approach and place the implant in the originally planned position while achieving the intended insertion torque.
Unlike the early days of modern implant dentistry, clinicians today have access to an extensive variety of implant designs. For this very reason, now is the time to revisit and systematically understand “Implant Morphology”—the relationship between implant design, clinical conditions, and implant selection—and thereby establish a solid clinical foundation for the coming era of digital transformation (DX).
Full-arch rehabilitation in patients with severe maxillary atrophy remains a significant clinical challenge. Zygomatic implants have expanded the possibilities for treating these complex cases; however, their placement is a highly invasive procedure, commonly performed under general anaesthesia, and is associated with specific anatomical and surgical risks and potential complications.
This presentation introduces innovative non-zygomatic approaches designed to provide predictable full-arch rehabilitation while reducing surgical invasiveness and avoiding the need for zygomatic implants in selected cases. Particular emphasis will be placed on the Palatal Approach, which offers an alternative pathway for implant placement in severely atrophic maxillae, allowing clinicians to utilise available bone while maintaining a minimally invasive and prosthetically driven treatment concept.
The presentation will explore the clinical rationale behind the development of these techniques, their indications and limitations, and how they may expand the range of treatment options for patients who would traditionally be considered candidates for zygomatic rehabilitation. The potential reduction in morbidity and complications associated with avoiding zygomatic implants will also be discussed.
The treatment concept will be illustrated through clinical cases involving Neodent implants and the All-on-X concept, with particular focus on immediate implant placement and immediate full-arch rehabilitation.
By continuously developing and refining non-zygomatic techniques, clinicians may be able to treat increasingly complex cases without resorting to zygomatic implants, while maintaining a simplified, prosthetically driven and efficient approach to full-arch rehabilitation.
In 1989, the Japan Dental Association launched the 8020 Campaign, aiming to help people retain at least 20 natural teeth at the age of 80. The achievement rate has steadily increased from approximately 7% at the beginning of the campaign to 51.6% in 2022, reflecting remarkable improvements in oral health among older adults.
During the same period, life expectancy in Japan has increased by approximately six years, reaching 81 years for men and 87 years for women. Better preservation of natural dentition has likely contributed to improved nutrition and greater longevity. However, healthy life expectancy has shown little improvement over the past two decades, leaving an average period of disability of approximately 9 years for men and 12 years for women. Because many dental clinics are not equipped to provide hospital-based care, clinicians should prepare patients for the stage when they are no longer able to attend regular dental appointments.
The primary goal of prosthetic treatment for older adults is to establish an oral condition that remains stable and requires minimal intervention, even after patients lose the ability to visit the clinic. Long-term treatment planning should therefore focus not only on functional and esthetic outcomes but also on maintaining oral health throughout the patient’s later years.
This presentation will discuss prosthetic and implant treatment strategies for the super-aging society through long-term clinical cases, with emphasis on treatment planning that supports durable, low-maintenance oral function throughout the patient’s lifetime.
2026 ICOI International Congress of Oral Implantologists Japan Chapter Academic Conference
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