THE READERS' CORNER
Topics include slot sizes, full vs. segmented arches, and use of loops; and inventory methods.
1. What slot size do you typically use?
Fifty-seven percent of the clinicians reported using an .018"X.025" slot, 36% used an .022"X.028" slot, and the remaining 7% used a bidimensional slot.
What size archwire do you typically use for closing arch mechanics?
With the .018" slot, the most common closing archwires were .016"X.022" (43%) and 017"X.025" (37%). A few respondents used .016"X.016" (13%) or .016" round (7%). There was no particular favorite among clinicians who reported using an .022" slot; .018" round, .016"X.022", .017"X.025", .018"X.025", and .019"X.025" were each used by 15-20% of the readers.
Do you prefer to use a segmented arch or a full archwire, and under what circumstances would you use each?
An overwhelming majority preferred to use a full archwire, citing "better control" as the principal reason. However, these particular situations were often cited as indications for segmented mechanics:
What mechanics do you usually use for closing?
Loop mechanics were preferred by 40% of the respondents and sliding mechanics by 32%. The remaining 28% said they used both types.
If loop mechanics, what type of loop do you use?
The keyhole loop was cited by 34% of the orthodontists who used loops, the Bull loop by 27%, the closed helical loop by 27%, and the T-loop by 11%.
[show_img]327-jco-img-1.jpg[/show_img]If sliding mechanics, what is the closing force?
More than 85% of the respondents reported using elastomeric modules or power chain as their principal means of space closure with sliding mechanics. Titanium coils were used by 25% of the readers, Class I elastics by 20%, and stainless steel coils and Class II elastics by about 10% each.
Do you typically put a tieback in the closing arch?
Of the clinicians who used mainly sliding mechanics, only 18% placed tiebacks in their closing archwires. Of those who used loops, however, 53% said they placed tiebacks.
What is your best advice to other orthodontists on problems to avoid or clinical tips to use in closing arch mechanics?
General themes of the advice included:
Some specific comments:
2. Do you maintain an in-house inventory of supplies ?
Nearly all of the respondents (94%) reported keeping an in-house inventory.
How do you organize and store your supplies?
Many of the orthodontists kept bulk items in a storage area away from the operatory (such as a basement) and kept immediate needs in the clinical area. Closets and cabinets adjacent to the operatory or in central islands were often used for immediate storage. Many respondents said they labeled the storage areas for each item, especially in bulk storage, so they could see at a glance if items on a shelf were getting low. Others placed tags on particular units in the bulk storage area that would let the staff know it was time to reorder when those units were taken out. Ordering information was often kept on 3"X5" index cards; only 8% of the respondents kept their inventory on computer.
Specific responses included:
Who is responsible for keeping the inventory?
In 67% of the offices, one staff member was responsible for keeping inventory. More than one staff member was responsible in 27% of the offices, and the orthodontist carried out this function in 6%.
Who decides what will be ordered and from which companies?
Thirty-five percent of the clinicians said they made the decisions themselves, and another 35% did so in cooperation with a staff member. In 20% of the offices, one staff member alone made ordering decisions, while more than one staff member was responsible in 10% of the offices.
Have you been able to obtain quantity discounts? If so, what advantages and disadvantages have you found?
About 90% of the practices said they could get quantity discounts. Advantages included lower costs, less frequent ordering, better inventory control, and better service. Disadvantages included tying up capital, storage space requirements, the possibility of overstocking on items no longer needed, and the limited shelf life of some products.
Comments included:
Have you used the "just-in-time" inventory method? If so, what advantages and disadvantages have you found?
Only 28% of the clinicians had tried this method. Specific points included:
Additional advice on inventory management included:
JCO would like to thank the following contributors to this month's column:
Dr. H. Joseph Andrews, Dana Point, CA
Dr. George M. Ash, Saline, MI
Drs. Robert A. Azarik and Donald C. Bedrosian, Perkasie, PA
Dr. Eric M. Barnes, Chicago, IL
Dr. Neil L. Blitz, Warwick, RI
Dr. Charles F. Bohl, Brookfield, WI
Drs. Gary A. Bolmgren and Jerry E. Johnson, Edina, MN
Dr. F.A. Booth, Fayetteville, NC
Dr. Robert J. Brown, Hilliard, OH
Dr. Steven W. Campbell, Salem, OR
Dr. John M. Capogna, New Hyde Park, NY
Dr. Anthony F. DeBerardinis, Easton, PA
Dr. Marshall R. Deeney, Perry, NY
Dr. Marshall B. Fleer, East Brunswick, NJ
Dr. Kenneth F. Freer, Vallejo, CA
Dr. R.S. Friedman, Morris Plains, NJ
Dr. Roger A. Grace, Fort Walton Beach, FL
Drs. Douglas S. and Lawrence S. Harte, Livingston, NJ
Dr. Tucker Haltom, Albuquerque, NM
Dr. Candyse Jeffries, Florence, KY
Dr. Wendy J. Katz, Marietta, GA
Dr. Alan P. Kawakami, Sierra Vista, AZ
Dr. Gary R. Keszler, Ukiah, CA
Dr. J. Nicholas Leyko, Perry Hall, MD
Drs. Steven J. Luccarelli and Stephen E. Weiss, East Williston, NY
Dr. James D. Martin, Pleasant Hill, CA
Drs. Mark S. and Steven G. Misencik, Strongsville, OH
Dr. Donald R. Oliver, Creve Coeur, MO
Drs. Stanley Pastor and Patrick D. Shannon, Tulsa, OK
Dr. William C. Patterson, San Ramon, CA
Dr. E. Tyler Pearson, Bristol, TN
Dr. Robert C. Penny, Weatherford, TX
Dr. Donald Peppercorn, Willoughby, OH
Dr. William A. Raineri, Liverpool, NY
Dr. Justin L. Roth, Lakewood, CO
Dr. Kenneth Rowan, Jefferson City, MO
Dr. Bruce W. Scarola, Brandon, FL
Dr. James Schweiger, Duluth, MN
Dr. Michael W. Sheets, Corvallis, OR
Dr. James B. Smith, Freedom, CA
Dr. George A. Sullivan, Phoenix, AZ
Dr. James N. Thacker, Cincinnati, OH
Dr. Leo Wasserberger, Bloomfield Hills
Dr. Stanley P. Williamson, Edina, MN
Dr. Gene H. Wilskie, Lynnwood, WA
Dr. Morton Wintner, Coraopolis, PA
Dr. Stanley J. Wolfe, North Haven, CT
Dr. Jeff S. Zapalac, Austin, TX