Native American Artifacts: Arrowheads
flint tools were used as hand-held or hafted blades (blades fitted with a handle), scrapers, or knives. Use of the word arrowhead is ... This is called percussion chipping and was repeated until the piece was properly thinned and shaped. The piece was then pressure chipped using a sharpened deer
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Native American Artifacts: Arrowheads - ohioarch.org
www.ohioarch.orgActually, the term arrowhead is misleading. Many of these pointed flint tools were never . used on spears, arrows, or atlatls (a type of spear thrower, pronounced ät'-lä-t
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www.aae.orgreached the periapical tissues, thus resulting in no pain or discomfort to percussion. In such cases, dental history and thermal testing are the primary tools for assessing pulpal status. Asymptomatic Irreversible Pulpitis is a clinical diagnosis based on subjective and objective indings indicating that the
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www.utmb.eduNote: Percussion should not be painful or uncomfortable to the patient. If it is, other techniques must be considered. Amount of time for percussion varies: 30-45 seconds to 2-3 minutes per segment depending on amount of secretions and how easily moved. Aim for brief, effective, safe treatment. If using a mechanical percussor, t he same