◆ドイツ口腔インプラント学会・指導医( 旧：国際口腔インプラント学会・指導医 )
◆日本歯科レーザー学会認定医
◆日本口腔インプラント学会会員
◆日本再生歯科医学会会員
【 略歴 】
1969年生まれ
日本歯科大学新潟歯学部卒
新潟大学歯学部付属病院にて臨床研修後同大学第一保存学教室に入局、岩久教授の下で３Mix-mp法を学ぶ
2002年 医療法人社団伸整会に勤務
2006年 ドイツフライブルグ大学口腔外科にてインプラントアドバンスサージカルコース修了
2010年 ドイツ口腔インプラント学会・指導医取得
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chronometer watches
Understanding COSC Certification and Its Importance in Horology
COSC Accreditation and its Rigorous Standards
Controle Officiel Suisse des Chronometres, or the Controle Officiel Suisse des Chronometres, is the official Swiss testing agency that attests to the accuracy and precision of timepieces. COSC certification is a symbol of superior craftsmanship and reliability in timekeeping. Not all timepiece brands seek COSC validation, such as Hublot, which instead follows to its own demanding criteria with movements like the UNICO, reaching equivalent accuracy.
The Science of Exact Chronometry
The core mechanism of a mechanized timepiece involves the mainspring, which provides power as it unwinds. This system, however, can be prone to environmental factors that may influence its accuracy. COSC-accredited movements undergo rigorous testing—over 15 days in various conditions (five positions, 3 temperatures)—to ensure their resilience and reliability. The tests evaluate:
Typical daily rate precision between -4 and +6 seconds.
Mean variation, highest variation levels, and effects of thermal variations.
Why COSC Validation Matters
For watch fans and connoisseurs, a COSC-certified watch isn’t just a item of tech but a demonstration to enduring excellence and precision. It symbolizes a timepiece that:
Provides outstanding reliability and precision.
Offers confidence of superiority across the whole design of the watch.
Is likely to maintain its worth more efficiently, making it a smart choice.
Popular Timepiece Manufacturers
Several well-known manufacturers prioritize COSC certification for their watches, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, presents collections like the Record and Soul, which highlight COSC-certified movements equipped with innovative materials like silicone equilibrium springs to enhance resilience and performance.
Historical Background and the Development of Chronometers
The idea of the timepiece originates back to the need for exact timekeeping for navigation at sea, highlighted by John Harrison’s work in the 18th century. Since the formal foundation of COSC in 1973, the validation has become a standard for assessing the accuracy of luxury watches, continuing a tradition of excellence in watchmaking.
Conclusion
Owning a COSC-validated watch is more than an visual choice; it’s a dedication to quality and accuracy. For those appreciating precision above all, the COSC validation provides peacefulness of thoughts, ensuring that each validated timepiece will perform dependably under various circumstances. Whether for individual satisfaction or as an investment, COSC-validated timepieces stand out in the world of watchmaking, bearing on a legacy of careful chronometry.
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