Session
Dr.10月 3日（土）
15:15 - 16:45
4F〜6FホールC
Session13
From Glass Ionomers to Glass Hybrids: 50 Years of Innovation
グラスアイオノマーからグラスハイブリッドへ
～半世紀の技術革新～
グラスアイオノマー誕生から半世紀。本セッションでは、この50年でのイノベーションに着目し、根面う蝕のマネージメントにおけるGICとSDFの併用効果、ポストアマルガム時代の持続的かつ効果的なアマルガムフリーへの移行、さらに耐久性と機能を飛躍的に高めたグラスハイブリッド材の最新エビデンスを取り上げます。半世紀の技術革新が日常臨床をどう変えていくのか、ぜひ本セッションで体感してください。
Lecturer
New concept of dentin caries management using GIC and SDF
GICおよびSDFを用いた象牙質う蝕治療の新たなアプローチ
- Describe microbiome difference of dentin caries
- Summarize effect of fluoride on dentin caries
- Describe effects of GIC and SDF on dentin remineralization
- 象牙質う蝕におけるマイクロバイオームの違い
- 象牙質う蝕に対するフッ化物の効果をまとめ
- 象牙質の再石灰化に対するGICおよびSDFの効果
齲蝕は世界に蔓延する疾患であり、高齢者では歯根面齲蝕の対策が大きな課題となっている。グラスアイオノマーセメント（GIC）は抗齲蝕作用と再石灰化作用を有しており、またフッ化ジアミン銀（SDF）は優れた殺菌作用を有していることから、どちらも根面齲蝕のマネージメントに用いられている。我々はGICとSDFを象牙質齲蝕に併用すると、それぞれを単独で用いるよりも再石灰化が効果的に起こる可能性を報告した。
Lecturer
Navigating the Post-Amalgam Era:
Policy, Practice, and Economic Impact
Navigating the Post-Amalgam Era:
Policy, Practice, and Economic Impact
- Describe the key international and national policy drivers accelerating the reduction and elimination of dental amalgam use, including the Minamata Convention and emerging regulatory responses.
- Evaluate the clinical implications of shifting from amalgam to alternative restorative materials, including effects on technique sensitivity, longevity, workflow, and patient communication.
- Analyze the short- and long-term economic impacts of the transition on dental practices, payers, and health systems, including material costs, chair time, reimbursement structures, and preventive care models.
- Identify opportunities to optimize care delivery in the post-amalgam era through enhanced prevention, minimally invasive dentistry and evidence-informed material selection.
- Formulate strategic actions for practice and policy adaptation, supporting a sustainable and clinically effective transition to amalgam-free dentistry.
- Describe the key international and national policy drivers accelerating the reduction and elimination of dental amalgam use, including the Minamata Convention and emerging regulatory responses.
- Evaluate the clinical implications of shifting from amalgam to alternative restorative materials, including effects on technique sensitivity, longevity, workflow, and patient communication.
- Analyze the short- and long-term economic impacts of the transition on dental practices, payers, and health systems, including material costs, chair time, reimbursement structures, and preventive care models.
- Identify opportunities to optimize care delivery in the post-amalgam era through enhanced prevention, minimally invasive dentistry and evidence-informed material selection.
- Formulate strategic actions for practice and policy adaptation, supporting a sustainable and clinically effective transition to amalgam-free dentistry.
The global phase-down and phase-out of dental amalgam is reshaping oral health policy, clinical practice, and economic planning. As regulatory frameworks evolve in response to environmental agreements and public expectations, dental care systems must reorient toward preventive and minimally invasive-restorative strategies. This presentation synthesizes current policy developments, evaluates the clinical and operational implications for dental practitioners, and analyzes the cost and reimbursement consequences for health systems. By integrating a clinical and economic perspectives, it provides a roadmap for navigating the transition to a sustainable, evidence-based post-amalgam era.
Lecturer
Glass Hybrids:
Evolution, Evidence, and Clinical Impact
Glass Hybrids:
Evolution, Evidence, and Clinical Impact
- Identify key compositional innovations in glass-hybrid materials.
- Summarize improvements in setting kinetics, strength, and wear resistance.
- Describe bioactive features such as fluoride release and chemical adhesion.
- Identify key compositional innovations in glass-hybrid materials.
- Summarize improvements in setting kinetics, strength, and wear resistance.
- Describe bioactive features such as fluoride release and chemical adhesion.
Glass-hybrid materials represent a major development in glass ionomer technology, designed to improve mechanical performance, longevity, and clinical reliability. Through optimized fluoro-aluminosilicate glass reactivity, incorporation of highly dispersed ultrafine fillers, and reinforcement of the polyacrylic matrix, these next-generation materials exhibit faster setting, increased wear resistance, and superior flexural strength compared with conventional glass ionomers. They also maintain sustained fluoride release and chemical adhesion to tooth structure, supporting bioactivity and long-term stability at the tooth_material interface. Clinical studies indicate that glass-hybrid restoratives provide a reliable and biologically favorable option for posterior teeth, combining enhanced mechanical properties with positive clinical outcomes.
