A GUIDE TO THE
USE OF THE HAWLEY-FORM
The 5-minute Chair-side Customized Retainer
The Hawley-form is the ultimate retainer. Not only can it be customized immediately upon bracket removal at chairside but its unique features solve many problems present in most other retainers.
The Advantages of the Hawley-Form are:
1) Can immediately
be customized in the mouth at chairside.
No impressions or additional appointments needed.
2) Snaps firmly into place to prevent it from falling
out.
3) Maintains rotation corrections.
4) Retains overjets better than other retainers.
5) Can expand or constrict arch widths due to imbedded
wire feature.
6) Can restore rotation relapses.
7) Can retain torque.
The Hawley-Form single size retainer is available in a kit which contains a Hawley-Form retainer of choice see above and the necessary materials and tools to customize the appliance in a patients' mouth or on a plaster model. If a lower retainer (with or without and imbedded wire) is needed or desired, it can be ordered at the same time at an additional cost and can be included in kit. (fig. 4)
UNIQUE DESIGN OF THE HAWLEY-FORM
 |
All Hawley-Form appliances have anterior rotation bars that extend halfway down the crowns of the anterior teeth in order to squeeze the incisors both labially and lingually(fig. 5). This pressure insures that rotational corrections are properly maintained. If the retainer is lost or not worn for a period of time and relapse occurs, the Hawley-Form is capable of returning the rotated incisors back to their optimal positions. (Some active daytime exercise may be necessary). The imbedded lingual wire in the "E" and "A" appliance versions can be expanded or constricted to alter the entire posterior arch width or to individually alter specific areas such as across the canines or molars in either the maxilla or mandible (fig. 6). |
The unique upper lingual tab in the "A" version forces the mandible to be positioned anteriorly in order to properly retain corrected overjets by just wearing the upper Hawley-Form by itself (fig. 7a).
If larger mandibular advancements are to be made, the upper Hawley-Form "A" can be used simultaneously with either lower Hawley-Form "R" or "E" in order to prevent any adverse labialization of the lower incisors (fig. 7b).
The upper lingual tab is textured to receive liner on its labially-directed surface in order to customize its fit to the mandibular lingual tissue in the mouth (or to the lower Hawley-Form retainer). |
 |
CUSTOMIZING THE HAWLEY-FORM
There are two ways to customize the fit of the Hawley-Form. the first and quickest way is to insert the appliance with the liner directly in the mouth at the chairside (fig. 8). The second way is to customize the Hawley-Form directly on the plaster model of the patient's mouth (fig. 8b).
|
|
|
LINING THE
HAWLEY-FORM DIRECTLY IN THE
MOUTH:
|
Total Elapsed Time (MIN:SEC) |
1. Paint
the textured posterior surfaces of the Hawley-Form
with 2 coats of primer (fig. 9a). |
||
2.
Dispense the powder to the 2nd marking of the measuring tube
and pour into the mixing cup. This is enough powder for both
posterior segments (fig. 9b) |
|||
|
0:00 |
3. Fill
the dropper with liquid to the 2ml marking (fig. 9c) and
dispense over the powder into the mixing cup, and begin
spatulating (fig. 9d).
|
||
|
0:30 |
4. Spatulate the powder and liquid for 30 seconds. | ||
|
1:00 |
5. Let stand for 30 seconds. | ||
|
1:00 |
6. Load
both posterior segments of Hawley-Form (fig. 10a). |
||
|
2:30 |
7. Let stand for 1 minute | ||
|
2:30 |
8. Insert
into mouth and hold firmly in place (fig. 10b). |
||
|
6:30 |
9. Hold for 4 minutes then remove. |
Remove and trim the excess material form the margins. Any sharp, fragile spicules should be snipped off with a ligature cutter or scissor. Don not remove these spicules completely, however, since they hold the appliance in place.
LINING THE HAWLEY-FORM ON PLASTER MODE
The advantage of this lining method is that it is a better way in individuals that have gingival recession with extensive undercuts and in mixed dentition cases where there are limited undercuts.
The following procedure is recommended for lining The Hawley-Form on a model:
|
Total Elapsed Time (MIN:SEC) |
1. Paint
the textured posterior surfaces of the Hawley-Form
with 2 coats of primer (fig. 12a). |
||
| 2. Check the fit of the Hawley-Form appliance in the mouth in the same manner as outlined previously. | |||
| 3. Coat the plaster model with separating model, being careful no to heavily plug up the interproximal undercuts. | |||
4.
Dispense the powder into the 2nd marking of the measuring
tube (fig. 12b) and pour into the mixing cup. |
|||
| 0:00 | 5. Fill
the dropper with the liquid to the 2ml marking (fig. 12c)
and dispense over the powder into the mixing cup. Begin
spatulating. |
||
| 0:30 | 6.
Spatulate the powder and liquid for 30 seconds. (fig. 12d) |
||
| 0:30 | 7. Immediately smear the mixed plastic into the interproximal undercuts and around the posterior teeth on the model. | ||
| 2:00 | 8. Le the remainder of the plastic in the mixing cup stand for 1 minute and 30 seconds. | ||
| 2:00 | 9. Load
the Hawley-Form
appliance with liner on both sides of the textured posterior
areas (fig. 13a). |
||
| 2:00 | 10.
Insert onto the plaster model (fig. 13b). |
||
| 8:30 | 11. Hold the appliance in place for 6 minutes and 30 seconds in the same way as described above. | ||
12. While
the plastic is still in its doughy state, cut the excess
material off around the margins of the Hawley-Form
with a plaster knife (fig. 14a). This saves considerable
trimming of the set plastic.
|
Lining the Hawley-Form Appliance Video
CUSTOMIZING
THE LINGUAL TAB IN THE UPPER
HAWLEY-FORM "A"
APPLIANCE
The Hawley-Form "A" upper appliance is used in cases that require overjet retention or mandibular advancement. If only the Hawley-Form "A" upper appliance is used, lining the lingual tab of the device is recommended to achieve a better fit to the tissues of the lower arch and should be done directly in the mouth. To prevent the upper Hawley-Form with the lingual tab from being dislodged by the mandible, the upper anterior segment may have to be lined to increase the retention to the dentition in this area.
Questions or Comments:
Call us at
1-800-541-6612
or email us orthotain@aol.com
For more information call 800-541-6612 or send a request to us On-Line
