This paper first indicates that the unique failure mode of arch dams is the dam body up sliding along the inclined base on both abutments.
Alternatively, an abutment may be removed from an implant with the use of forceps and a tapping instrument such as a mallet or another forceps.
An area behind the west abutment was utilized as the assembly shop.
Bases which carry horizontal load, for example under arches, are usually called abutments.
Foundations are bases placed on the ground so as to spread a vertical load over it. Bases which carry horizontal load are usually called abutments.
A pilot study on the effects of Mini-SG~? F attachments on periodontal health of the abutment teeth used in free-end partial removable dentures
A pilot study of the effect of three removable partial denture retainers on periodontal health of the abutment teeth
If a smaller diameter is necessary, the universal shouldered abutment or the original non-shouldered abutments for cement retained restorations should used.
It is pointed out that the stability of the dam abutment is a key factor affecting the safety of concrete arch dams.
The second reason were abutment recurrent caries and then dummy breaking, gingivitis and periodontitis etc.