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Short- and long-term evaluation of mandibular dental arch dimensional changes in patients treated with a lip bumper during mixed dentition followed by fixed appliances.
Angle Orthod 2016; 86(5):753-60AO

Abstract

OBJECTIVE

To evaluate short- and long-term mandibular dental arch changes in patients treated with a lip bumper during the mixed dentition followed by fixed appliances, compared with a matched control sample.

MATERIALS AND METHODS

Dental casts and lateral cephalograms obtained from 31 consecutively treated patients before (T0) and after (T1) lip bumper, after fixed appliances (T2), and a minimum of 3 years after fixed appliances (T3) were analyzed. The control group was matched as closely as possible. Arch width, arch perimeter, arch length, and incisor proclination were evaluated. Repeated measures ANOVA was used to analyze changes in measurements over all four time points between treatment and control groups.

RESULTS

Arch widths and crowding were always significantly different except at T2-T1. At T1-T0, only crowding decreased 3.2 mm while intercanine, interpremolar, and intermolar widths increased by 3.8, 3.3, and 3.9 mm, respectively. Changes at T3-T2 showed a significant decrease of 2.1 mm for crowding and an increase of 3.5, 2.9, 2.7, and 0.8 mm for intercanine, interpremolar, and intermolar widths and arch perimeter, respectively. Finally, at T3-T0, the reduction in crowding of 5.03 mm was significant and clinically important in the treated group. The differences between intercanine, interpremolar, and intermolar widths were also significant (2.1, 3.8, and 3.6 mm, respectively). All those differences favored the treated group.

CONCLUSIONS

Mandibular dental arch dimensions were significantly changed after lip bumper treatment. At follow-up, all arch widths were slightly decreased, generating an increase of 0.4 mm in crowding, considered clinically irrelevant. Overall changes remained stable after an average 6.3-year follow-up.

Authors+Show Affiliations

a Postgraduate Orthodontic Student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples, Naples, Italy.b Assistant Clinical Professor, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada.c PhD Student, Orthodontic Graduate Program, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada.d PhD Student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples, Naples, Italy.e Professor and Orthodontic Graduate Program Director, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada.f Associate Professor, Head of Orthodontic Unit and Chair of Postgraduate Program, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples, Naples, Italy.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26771718

Citation

Raucci, Gaetana, et al. "Short- and Long-term Evaluation of Mandibular Dental Arch Dimensional Changes in Patients Treated With a Lip Bumper During Mixed Dentition Followed By Fixed Appliances." The Angle Orthodontist, vol. 86, no. 5, 2016, pp. 753-60.
Raucci G, Pachêco-Pereira C, Elyasi M, et al. Short- and long-term evaluation of mandibular dental arch dimensional changes in patients treated with a lip bumper during mixed dentition followed by fixed appliances. Angle Orthod. 2016;86(5):753-60.
Raucci, G., Pachêco-Pereira, C., Elyasi, M., d'Apuzzo, F., Flores-Mir, C., & Perillo, L. (2016). Short- and long-term evaluation of mandibular dental arch dimensional changes in patients treated with a lip bumper during mixed dentition followed by fixed appliances. The Angle Orthodontist, 86(5), pp. 753-60. doi:10.2319/073015-519.1.
Raucci G, et al. Short- and Long-term Evaluation of Mandibular Dental Arch Dimensional Changes in Patients Treated With a Lip Bumper During Mixed Dentition Followed By Fixed Appliances. Angle Orthod. 2016;86(5):753-60. PubMed PMID: 26771718.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Short- and long-term evaluation of mandibular dental arch dimensional changes in patients treated with a lip bumper during mixed dentition followed by fixed appliances. AU - Raucci,Gaetana, AU - Pachêco-Pereira,Camila, AU - Elyasi,Maryam, AU - d'Apuzzo,Fabrizia, AU - Flores-Mir,Carlos, AU - Perillo,Letizia, Y1 - 2016/01/15/ PY - 2016/1/16/entrez PY - 2016/1/16/pubmed PY - 2018/3/27/medline KW - Dental arch dimensions KW - Lip bumper KW - Long-term KW - Mixed dentition KW - Stability SP - 753 EP - 60 JF - The Angle orthodontist JO - Angle Orthod VL - 86 IS - 5 N2 - OBJECTIVE: To evaluate short- and long-term mandibular dental arch changes in patients treated with a lip bumper during the mixed dentition followed by fixed appliances, compared with a matched control sample. MATERIALS AND METHODS: Dental casts and lateral cephalograms obtained from 31 consecutively treated patients before (T0) and after (T1) lip bumper, after fixed appliances (T2), and a minimum of 3 years after fixed appliances (T3) were analyzed. The control group was matched as closely as possible. Arch width, arch perimeter, arch length, and incisor proclination were evaluated. Repeated measures ANOVA was used to analyze changes in measurements over all four time points between treatment and control groups. RESULTS: Arch widths and crowding were always significantly different except at T2-T1. At T1-T0, only crowding decreased 3.2 mm while intercanine, interpremolar, and intermolar widths increased by 3.8, 3.3, and 3.9 mm, respectively. Changes at T3-T2 showed a significant decrease of 2.1 mm for crowding and an increase of 3.5, 2.9, 2.7, and 0.8 mm for intercanine, interpremolar, and intermolar widths and arch perimeter, respectively. Finally, at T3-T0, the reduction in crowding of 5.03 mm was significant and clinically important in the treated group. The differences between intercanine, interpremolar, and intermolar widths were also significant (2.1, 3.8, and 3.6 mm, respectively). All those differences favored the treated group. CONCLUSIONS: Mandibular dental arch dimensions were significantly changed after lip bumper treatment. At follow-up, all arch widths were slightly decreased, generating an increase of 0.4 mm in crowding, considered clinically irrelevant. Overall changes remained stable after an average 6.3-year follow-up. SN - 1945-7103 UR - https://www.unboundmedicine.com/medline/citation/26771718/Short__and_long_term_evaluation_of_mandibular_dental_arch_dimensional_changes_in_patients_treated_with_a_lip_bumper_during_mixed_dentition_followed_by_fixed_appliances_ L2 - http://www.angle.org/doi/10.2319/073015-519.1?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -