PMC4864566_01
Pretreatment intraoral photographs, panoramic and cephalometric radiographs, and cephalometric tracing. Angle Class III malocclusion. Complete maxillary crossbite.
CRID2016-8306397.001.jpg
PMC4864566_01_CRID2016-8306397.001.jpg
fig1
Radiographically, the correct sequence of eruption, skeletal Class I malocclusion (ANB = 1 ), with a Class III tendency (Ao-Bo = -8 mm) and angle Class III malocclusion, vertical growth trend, and upright maxillary and mandibular incisors were noted (Figure 1 and Table 1).
Midline diastema with clinical signs of the suture opening. Occlusal radiographs with real disjunction of the suture. (a) After three weeks and 52 screw activations. (b) 43 days and (c) and (d) 5 months and 6 months after retention. The diastema returned to the initial dimensions in the retention phase of the screw.
CRID2016-8306397.002.jpg
PMC4864566_01_CRID2016-8306397.002.jpg
fig2
The orientation about care (food, hygiene, and activation) was explained after the palatal expander had been fixed (Figure 2). The diastema returned to the initial dimensions at the retention phase (Figure 2).
Lingual holding arch and the maintenance of the E-space.
CRID2016-8306397.003.jpg
PMC4864566_01_CRID2016-8306397.003.jpg
fig3
The use of the remaining E-space enabled the alignment of the anterior lower teeth (Figure 3). There was also a clinically significant space gain in the maxillary dental arch allowing the alignment of the lateral incisors into the occlusion line, while the perimeter of the lower arch was maintained with the lingual holding arch (Figure 3).
Posttreatment intraoral photographs. Good intercuspidation and adequate overjet and overbite. The skeletal and dental characteristics remained. Superimposition: pretreatment, black; posttreatment, red.
CRID2016-8306397.004.jpg
PMC4864566_01_CRID2016-8306397.004.jpg
fig4
The results of the alignment, leveling, and intercuspation are illustrated in Figure 4.
Two years nine months of posttreatment follow-up. Stability of the functional and occlusal results. Eruption of the third molars.
CRID2016-8306397.005.jpg
PMC4864566_01_CRID2016-8306397.005.jpg
fig5
All third molars were fully erupted (Figure 5).