Zinner I D
Dent Clin North Am. 1985 Jan;29(1):97-115.
The history of the nonlocking type of intracoronal semiprecision rest has been traced from its origins with Neurohr in 1930, up to its present use as the Thompson dowel rest. The advantages of the use of this deep rest design and the clasp arm design for primary retention have been discussed. The Blatterfein modification of the lingual clasp arm has been introduced to overcome the problems of breakage and lack of stabilization that are present with the Thompson, Van Dam, and Wands designs. Several clinical situations have been illustrated demonstrating the variety of applications of the Thompson dowel rest type of semiprecision prostheses.
非锁定型冠内半精密固位体的历史可追溯至1930年其起源于Neurohr之时，直至其如今作为汤普森桩钉固位体使用。本文已讨论了采用这种深固位体设计及卡环臂设计进行主要固位的优点。已引入了舌侧卡环臂的布拉特费因改良设计，以克服汤普森、范丹姆和万兹设计中存在的折断和缺乏稳定性问题。文中举例说明了几种临床情况，展示了汤普森桩钉固位体类型半精密修复体的多种应用。
