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Dive into the research topics where Zappa U is active.

Publication


Featured researches published by Zappa U.


Journal of Clinical Periodontology | 1991

Cell populations and episodic periodontal attachment loss in humans

Zappa U; M. Reinking-Zappa; H. Graf; Mark A. Espeland


Journal of Periodontology | 1991

In vivo scaling and root planing forces.

Zappa U; J. Cadosch; C. Simona; H. Graf; Douglas Case


Journal of Periodontology | 1995

Short-term effects of phase I therapy on crevicular cell populations.

Boretti G; Zappa U; H. Graf; Douglas Case


Journal of Periodontology | 1993

Clinical furcation diagnoses and interradicular bone defects.

Zappa U; Grosso L; C. Simona; H. Graf; Douglas Case


Journal of Clinical Periodontology | 1991

Cross-sectional and longitudinal reliability for clinical measurement of attachment loss*

Mark A. Espeland; Zappa U; Patricia E. Hogan; C. Simona; H. Graf


Journal of Periodontology | 1998

NATURE AND ATTACHMENT OF CEMENTUM FORMED UNDER GUIDED CONDITIONS IN HUMAN TEETH. AN ELECTRON MICROSCOPIC STUDY

Hans U. Luder; Zappa U


Journal of Clinical Periodontology | 1986

Microbial populations and active tissue destruction in experimental periodontitis.

Zappa U; Alan M. Polson; A.D. Eisenberg; Mark A. Espeland


Journal of Periodontology | 1993

In Vivo Scaling and Root Planing Forces in Molars

Zappa U; Röthlisberger Jp; C. Simona; Douglas Case


Journal of Periodontology | 2002

In Vivo Ultrasonic Debridement Force in Bicuspids: A Pilot Study

Martin Ruppert; Johann Cadosch; Joseph Guindy; Douglas Case; Zappa U


Journal of Periodontology | 1993

Time-Related Changes of In Vivo Projection Errors in Standardized Radiographs

Zappa U; C. Simona; H. Graf; and Jan van Aken

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