Pressure and resistance of the lips in subjects with and without occlusal change

Paulino, Clarissa Evelyn Bandeira; Laureano Filho, José Rodrigues; Menezes, Laís Fátima Fonseca de; Rocha Neto, Alipio Miguel da; Studart-Pereira, Luciana Moraes

doi:10.1590/1982-0216/20192139118

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ORIGINAL ARTICLES • Rev. CEFAC 21 (3) • 2019 • https://doi.org/10.1590/1982-0216/20192139118 copy

Pressure and resistance of the lips in subjects with and without occlusal change

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Objective:

to evaluate the resistance and pressure of the lips in Class I, II and III Angle’s malocclusion subjects, in comparison to reference values and relate them with gender and age.

Methods:

a quantitative, descriptive and cross-sectional study. Participants included 40 subjects, 20 women and 20 men, average age 26.3 years, separated by occlusal classification. The volunteers answered on the self-reported performance of the stomatognathic functions and were submitted to the evaluation of the mobility and posture of the lips. Pressure and resistance were measured with the Iowa Oral Performance Instrument (IOPI) and the results compared to the reference values described in the instrument´s manual. The data were analyzed descriptively and, for inferential analysis, Pearson's Chi-Square test was used. The significance level was considered 5%.

Results:

a decrease in pressure and resistance values wasobserved in all patients, including Angle’s class I group. There was an inverse relationship between the age of the subjects and the values of pressure of lips with statistical significance (p = 0.02). In general, women had lower pressure values than men.

Conclusion:

all study subjects had lower pressure of the lips than the reference values described in the literature.

Keywords:
Lip; Dental Occlusion; Dentofacial deformities

		According to reference values	N	N	p-value¹
Pressure	Class I	Yes	3	10
	Class I	No	7	10
	Class I Females	Yes	1	4	0.31
	Class I Females	No	3	4	0.31
	Class I Males	Yes	2	6	0.41
	Class I Males	No	4	6	0.41
	Class II	Yes	1	5
	Class II	No	4	5
	Class II Females	Yes	1	5	0.18
	Class II Females	No	4	5	0.18
	Class II Males	-	-	-	-
	Class III	Yes	3	25
	Class III	No	22	25
	Class III Females	Yes	2	11	0.03*
	Class III Females	No	9	11	0.03*
	Class III Males	Yes	1	14	0.001*
	Class III Males	No	13	14	0.001*
Resistance	Class I	Yes	3	10
	Class I	No	7	10
	Class I Females	Yes	1	4	0.31
	Class I Females	No	3	4	0.31
	Class I Males	Yes	2	6	0.41
	Class I Males	No	4	6	0.41
	Class II	Yes	1	5
	Class II	No	4	5
	Class II Females	Yes	1	5	0.18
	Class II Females	No	4	5	0.18
	Class II Males	-	-	-	-
	Class III	Yes	11	25
	Class III	No	14	25
	Class III Females	Yes	3	11	0.13
	Class III Females	No	8	11	0.13
	Class III Males	Yes	8	14	0.59
	Class III Males	No	6	14	0.59

		Average ± SD (s)	Median (s)	Reference Value (s)
Resistance	Class I Females	14.75 (±9.94)	12.00 (6-29)	15
	Class I Males	16.17 (±13.67)	12.50 (2-41)	15
	Class II Females	14.20 (±15.33)	10.00 (2-41)	15
	Class II Males	-	-	-
	Class III Females	14.82 (±15.81)	11.00 (2-57)	15
	Class III Males	41.57 (±64.32)	23.50 (1-243)	15

ABRAMO Associação Brasileira de Motricidade Orofacial Rua Uruguaiana, 516, Cep 13026-001 Campinas SP Brasil, Tel.: +55 19 3254-0342 - São Paulo - SP - Brazil
E-mail: revistacefac@cefac.br

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[1] Corresponding address: Clarissa Evelyn Bandeira Paulino, Federal University of Pernambuco, Rua Mirandópolis, 16, São Marcos, ZIPCODE: 52615-065 - Igarassu, Pernambuco, Brazil, Email: clarissa.bandeirap@gmail.com