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Which Type of Earring and Which Piercing Point Is Safest with Regard to Tearing Through the Ear by an External Force?
MedLine Citation:
PMID:  22288435     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To discover the relationship between earring types, piercing points, and the mechanical force needed for earrings to tear through the earlobe. METHODS: A 5-mm-thick silicon paddle was used as an earlobe model. Five types of earrings were used: hoop, stud, buckle, hook, and screw. Tension was measured 4, 8, and 12 mm from the lowest border. The force and degree of pull needed for the earrings to tear through the tissue or fall out were measured. RESULTS: The force required to pull the earlobe from 6 mm was 4.88 ± 1.74 N in a cadaver, 0.58 ± 0.18 N in the model, and 0.55 ± 0.19 N in a living earlobe. The hoop fell out with the least force applied (3.31 ± 0.90 N), followed by the stud (5.77 ± 1.81 N) and the buckle (7.78 ± 1.58 N). For the hook (8.98 ± 1.02 N) and screw (9.98 ± 2.01 N), all the models tore through. The 12-mm point required the greatest force to tear through (17.31 ± 2.33 N), followed by the 8- (13.64 ± 2.42 N) and 4-mm points (9.98 ± 2.01 N). CONCLUSION: The 4-mm point is recommended for hoops, buckles, and studs, and the 8-mm point or higher is recommended for screws and hooks.
Kun Hwang; Pil Joong Hwang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-30
Journal Detail:
Title:  Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.]     Volume:  -     ISSN:  1524-4725     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9504371     Medline TA:  Dermatol Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 by the American Society for Dermatologic Surgery, Inc. Published by Wiley Periodicals, Inc.
Department of Plastic Surgery; Center for Advanced Medical Education, BK21 Project, Inha University School of Medicine, Incheon, Korea.
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