1. Department of Experimental and Clinical Medicine
Faculty of Medicine, School of Dentistry, University of Foggia
Director: Prof. Lorenzo Lo Muzio 26
Poster Number
Graziano Montaruli, Gioacchino Pellegrino, Domenico Ciavarella
Evaluation of dentoalveolar and skeletal effects in the transverse plane of the use of Nitanium Palatal Expander 2 in adults
AIMS OF THE WORK
The aim of this study was to evaluate dentoalveolar and skeletal effects that nickel-titanium palatal expander determines in the transverse plane, verifying its effectiveness in adult patients in permanent dentition in the treatment of unilateral or bilateral posterior cross-bite.
MATERIALS AND METHODS
13 adult patients (8 females and 5 males, mean age 17,6) with unilateral or bilateral posterior cross-bite were treated with a nickel-titanium palatal expander NPE-2 (Nitanium® Palatal Expander 2™) at School of Dentistry, University of Foggia. The postero-anterior radiographic evaluation screening and analysis of casts at the beginning of treatment (T0) and at six months after the application of the device (T1) were performed to study the variations obtained with the NPE-2.
RESULTS
An increase of 2.9 mm (P<0,01) of the distance between the points CVM+d and CVM+s evaluated on the postero-anterior radiography and on casts 2.2 mm (P<0,01) of the posterior width, 1,4 mm (P<0,01) of the anterior width, 1,8 mm (P<0,05) of the canine distance, with a complete correction of unilateral or bilateral cross-bite, were obtained. No statistically significant increase in the transverse diameters was obtained in the lower arch. No evidence of radiographic radiolucency was detected in patients treated at the level of the median-palatal suture. T0 T1 D P
Parameters
Average
St. dev
St.dev
T0-T1 1
6+6
44,6
1,94
46,8
1,67
2,2 ** 2
4+4
36,1
2,12
37,5
2,36
1,4 3
3+3
33,1
3,32
34,9
3,02
1,8 * 4
per.arc.
78,2
3,12
79,7
3,16
1,5
NSS 5
6-6
39,9
1,23
41,1
1,46
1,2 6
3-3
28,3
1,08
28,9
1,38
0,6
*P<0,05 **P<0,01 ***P<0,001 T0 T1 D P
Parameters
Average
St. dev
T0-T1 1
Mxd-Mxs
62,4
2,42
63,8
1,96
1,4 * 2
CVM+d – CVM+s
57,5
1,88
60,4
1,98
2,9 ** 3
OCCLd - OCCLs
48,2
2,02
50,6
2,46
2,4 4
CVM-d – CVM-s
56,8
57,4
2,68
0,6
NSS
*P<0,05 **P<0,01 ***P<0,001
CONCLUSIONS
Dentoalveolar changes induced by the application of NPE-2 and the correction of unilateral or bilateral cross-bite show the effectiveness of this device even in adult patients in the permanent dentition.
References
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