2010 RWISO Journal - Roth Williams International Society of ...

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Case Reports The six cases below show individual clinical cases with various severity of attrition with or without treatment. Case 1: Attrition Occurred With no Orthodontic Treatment An 11-year-old female came in for checkup in April 2006, at which time the upper lateral incisor edges and canine tips showed wear (Figure 1). She had class I canine and molar relationships and a 3-mm overbite and overjet (April 2006). When she came back for orthodontic treatment 3 years later (January 2009), the wear on the laterals and canines had progressed significantly (red arrows). Figure 1 Attrition occurred with no orthodontic treatment. Case 2: Attrition Occurred During Orthodontic Treatment A 12-year-old male had a crossbite on the left laterals and an open bite on the central incisors (Figure 2). His canines and molars were in class I relationship (September 2002). After a year and a half without treatment, the upper left canine showed slight wear on the mesial side (January 2004). After 8 months of fixed appliance therapy, that canine showed marked flattening on the tip (October 2004). Figure 2 Attrition occurred during orthodontic treatment. 58 Linton, Jung | The Effect of Tooth Wear on Postorthodontic Pain Patients: Part 2 Case 3: No Attrition Occurred During Orthodontic Treatment A 17-year-old male had class II div. 2 malocclusion (Figure 3) and displayed no wear on the upper right canine tip (September 1995). After 22 months of treatment with mandibular advancement surgery, the sharp canine tip remained (July 1997). Figure 3 No attrition occurred during orthodontic treatment. Case 4: Slight Attrition Occurred During Orthodontic Treatment A 13-year-old male with class I malocclusion came in presented with sharp upper canine tips (June 1998). After 1½ years of fixed-appliance therapy (January 2000), the right canine tip remained intact (blue arrow), while the left canine tip showed wear. A photograph taken 2 years posttreatment (January 2002) showed wear on the right canine tip (Figure 4).
Figure 4 Slight attrition occurred during orthodontic treatment. Case 5: No Attrition Occurred During or Following Orthodontic Treatment A 24-year-old female came in for treatment of bimaxillary dentoalveolar protrusion (June 1998). The canine tip remained the same immediately after orthodontic treatment (April 2001) and 7 years posttreatment (April 2008). This patient had no apparent anterior tooth attrition over the 10-year observation period (Figure 5). On lateral excursive movement, canine guidance existed with adequate separation of posterior teeth on both the chewing and the nonchewing sides. Figure 5 No attrition occurred during or after orthodontic treatment. Case 6: Attrition Occurred During Orthodontic Treatment A 13-year-old male came to the clinic in January 2000 for treatment of protruding upper incisors. The patient’s face showed a protrusive upper lip and a normal-size mandible, with no apparent asymmetry. He had class II malocclusion with maxillary dentoalveolar protrusion, severe crowding in the upper and lower arches, and a constricted maxillary arch. The upper right canine had not erupted due to lack of space, even though the root had almost formed (Figure 6). Figure 6 Preorthodontic treatment photographs and x-rays. Figure 6-a Front facial smiling photograph. Figure 6-b Lateral facial photograph showing lip protrusion and strained mentalis muscle. Figure 6-c Right lateral intraoral photograph showing class II molar relationship in MIP. Figure 6-d Front intraoral photograph in MIP showing crowding and crossbite in the upper right lateral incisor. RWISO Journal | September 2010 59
Page 1 and 2:
Contents Volume 2, No. 1, September
Page 3 and 4:
Letter from the President Samuel B.
Page 5 and 6:
News from the Roth Williams Teachin
Page 7 and 8: In addition, three 8-hour courses w
Page 9 and 10: Drs. Edson Illipronti and Solange F
Page 11 and 12: The Transverse Dimension: Diagnosis
Page 13 and 14: Figure 4 Patient with gingival rece
Page 15 and 16: idge determines the width of the ma
Page 17 and 18: Figure 16 MPV of a cone-beam CT sca
Page 19 and 20: 8. Vanarsdall RL. Transverse dimens
Page 21 and 22: Hinge Axis: The Need for Accuracy i
Page 23 and 24: to the flag table (Figure 25). The
Page 25 and 26: The Axi-Path is designed so that th
Page 27 and 28: Figure 43 Nasion relator moves tran
Page 29 and 30: The distance between the preauricul
Page 31 and 32: Figure 63 Flag table. Figure 64 Fla
Page 33 and 34: Figure 72 Figure 73 Supposition: Th
Page 35 and 36: Figure 83 The distance between the
Page 37 and 38: Condylar Resorption, Matrix Metallo
Page 39 and 40: Figure 4-c The extracellular activi
Page 41 and 42: shows promise in curbing the bone l
Page 43 and 44: 29. Zardeneta G, Milam SB, Lee T, S
Page 45 and 46: Comparison of Maxillary Cast Positi
Page 47 and 48: points. They found that the mean di
Page 49 and 50: Figure 2-a, b True-hinge facebow. F
Page 51 and 52: to adjust for experimentwide error
Page 53 and 54: pending upon the direction in which
Page 55 and 56: 28. Goska JR, Christensen LV. Compa
Page 57: The Effect of Tooth Wear on Postort
Page 61 and 62: improved, with retraction of the up
Page 63 and 64: Figure 9-e Left lateral intraoral p
Page 65 and 66: All available intraoral photographs
Page 67 and 68: Figure 21 Mandibular movement after
Page 69 and 70: Physiologic Treatment Goals in Orth
Page 71 and 72: REFERENCES 1. Dawson PE. The Concep
Page 73 and 74: 70. McNamara JA Jr. The independent
Page 75 and 76: Effect of Gnathologic Positioner We
Page 77 and 78: sure was first checked in the mount
Page 79 and 80: For these analyses, the desired sig
Page 81 and 82: the .05 level of significance in th
Page 83 and 84: RWISO Journal | September 2010 83
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