Reliability of a visual analog scale for determining the preferred mastication side

Flores-Orozco, Elan Ignacio; Rovira-Lastra, Bernat; Peraire, María; Salsench, Juan; Martínez-Gomis, Jordi

doi:10.1016/j.prosdent.2015.07.006

Cited by 29 publications

(50 citation statements)

References 24 publications

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“…Therefore, each cycle was classified as right-, left-or no-side and recorded by means of two hand counters (Flores-Orozco, 2014; Flores-Orozco, Rovira-Lastra, Peraire, Salsench, & Martinez-Gomis, 2016). Questionable strokes were considered as no-side cycle.…”

Section: Masticatory Assaysmentioning

confidence: 99%

Lack of relationship between masticatory performance and nutritional status in adults with natural dentition

Flores-Orozco

Tiznado-Orozco

Osuna-González

et al. 2016

Archives of Oral Biology

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ObjectiveThis study assessed the relation among several aspects of the masticatory function and the nutritional status in adults with natural dentition. DesignOne hundred adults with natural dentition participated in this cross-sectional study. They performed one free-style masticatory test consisting of five trials of 20 silicon-chewing cycles. The preferred chewing side was determined by calculating the asymmetry index. Masticatory performance was determined by sieving the silicon particles, and the cycle duration was also recorded. Weight, body water percentage, body fat mass, muscle mass and osseous mass were measured using a portable digital weighing machine. Body mass index (BMI), waist-hip ratio, skinfold thickness and the upper-arm composition were determined. The relation between masticatory function and a nutritional variable were tested using Pearson or Spearman rank correlation coefficients or using analysis of variance or the Kruskal-Wallis H-test and the Mann-Whitney U test, as appropriate. ResultsWhereas body fat percentages for women were significantly higher than for men, the body mass index was higher in men than in women. Participants who were underweight chewed more asymmetrically and more slowly than normal weight or obese participants. A negative correlation was observed between body fat percentage and masticatory laterality. No relation between masticatory performance and any nutritional status indicator was detected. ConclusionBeing underweight and having a low body fat percentage seem to be related to a masticatory lateral asymmetry and to a large cycle duration in young adults with natural dentition. Masticatory performance does not seem to be related to nutritional status.

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Section: Masticatory Assaysmentioning

confidence: 99%

Lack of relationship between masticatory performance and nutritional status in adults with natural dentition

Flores-Orozco

Tiznado-Orozco

Osuna-González

et al. 2016

Archives of Oral Biology

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“…The side of mandible lateralisation while closing was counted for each chewing cycle using a slow‐speed playback mode to confirm the operator's direct vision . Masticatory laterality perceived by the participants was assessed using a VAS, in which subjects made a mark on a 10‐cm line with ‘always left’ (−1) and ‘always right’ (+1) at either end and ‘no preference’ (0) in the middle …”

Section: Methodsmentioning

confidence: 99%

“…While two studies found that individuals with missing unilateral posterior teeth or with asymmetric shortened dental arches tended to chew more unilaterally than healthy dentate individuals, another study reported similar distributions of chewing side preference in patients missing teeth on the right side, on the left side and in both sides . These discrepancies can be attributed to differences in the study populations and in the methods used to determine the PCS or to assess masticatory laterality . Masticatory laterality can be defined as a functional asymmetry appearing when one side is preferred over the other side for chewing and can be assessed quantitatively by an asymmetry index .…”

Section: Introductionmentioning

confidence: 99%

“…Masticatory laterality can be defined as a functional asymmetry appearing when one side is preferred over the other side for chewing and can be assessed quantitatively by an asymmetry index . Among the objective methods, the use of bagged silicone to assess either the first cycle or all cycles has shown a high level of reproducibility and validity . Furthermore, the use of a visual analogue scale (VAS) is a valid and reliable method for assessing the degree of subjective masticatory laterality …”

Section: Introductionmentioning

confidence: 99%

“…Among the objective methods, the use of bagged silicone to assess either the first cycle or all cycles has shown a high level of reproducibility and validity . Furthermore, the use of a visual analogue scale (VAS) is a valid and reliable method for assessing the degree of subjective masticatory laterality …”

Section: Introductionmentioning

confidence: 99%

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Changes in masticatory laterality 3 months after treatment with unilateral implant‐supported fixed partial prosthesis

Khoury‐Ribas

Ayuso‐Montero

Willaert

et al. 2019

J of Oral Rehabilitation

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Objective This study assessed changes in masticatory laterality in patients with unilateral posterior missing teeth 3 months after treatment with an implant‐supported fixed partial prosthesis (ISFPP). Methods Thirty patients with unilateral posterior missing teeth participated in this prospective study. They were treated with one‐, two‐ or three‐unit ISFPPs. The control group comprised 10 healthy individuals with complete natural dentition. Each participant performed masticatory assays at baseline and at 3‐month follow‐up, chewing pieces of silicon inside a latex bag. Masticatory laterality was determined using three different methods: assessment of the first chewing cycle, of all cycles and application of a visual analogue scale. Data were compared using the Kruskal‐Wallis or the Mann‐Whitney U test as appropriate. Results Three months after treatment, a significant change in the asymmetry index towards the treated side and a significant reduction in the Unilateral Chewing Index were observed in the ISFPP group. No significant differences in masticatory laterality between groups were detected at 3‐month follow‐up, regardless of the method assessed. Conclusion Treatment with ISFPPs alters the masticatory laterality, moving it to the treated side and increasing the degree of bilateral chewing in patients with unilateral posterior missing teeth.

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Mandibular overdenture with a single implant in the canine region (c-SIMO): a feasibility study

Maniewicz,

Curado,

Srinivasan

et al. 2024

Clin Oral Invest

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Objectives The aim of this multi-center pilot study was to assess the viability and feasibility of a novel treatment concept – the canine-positioned single implant mandibular overdenture (c-SIMO), with the single implant placed on the patient's preferred chewing side instead of the midline. Materials and methods Participants received a single implant in the canine region of their preferred chewing side, based on an Asymmetry Index observed during mastication. The pre-existing mandibular denture was transformed into a c-SIMO on a spherical attachment. The primary outcome was oral health-related quality of life (OHRQoL), measured with GOHAI and OHIP-EDENT. Secondary outcomes included denture satisfaction index (DSI), chewing efficiency (CE), maximum bite force (MBF), implant survival and success, and prosthetic maintenance. Data analysis included descriptive statistics and bivariate comparison tests. Results Fifteen participants received the c-SIMO treatment (mean age: 69.9 ± 7.0). Implant success and survival rates were 100% at 1 year. Patient-reported outcome measures improved significantly compared to pre-treatment values (OHIP-EDENT: p = 0.001; DSI: p = 0.001; GOHAI: p = 0.002). Masticatory outcomes also improved significantly (CE: p = 0.001; overall MBF: p = 0.005). Post-implant, MBF was significantly higher in the ipsilateral side compared to the contralateral side at 2 weeks (p = 0.019) and 3 months (p = 0.015), but no longer at T3 (p = 0.730). Common prosthodontic events included denture base adjustments (n = 17) and matrix activation (n = 9). Conclusions This pilot study concludes that c-SIMO is a promising treatment option, and a potential alternative to the single midline implant overdenture. Clinical relevance The novel treatment concept of a canine-positioned single implant mandibular overdenture could be a viable treatment alternative to the midline positioning.

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Reliability of a visual analog scale for determining the preferred mastication side

Cited by 29 publications

References 24 publications

Lack of relationship between masticatory performance and nutritional status in adults with natural dentition

Lack of relationship between masticatory performance and nutritional status in adults with natural dentition

Changes in masticatory laterality 3 months after treatment with unilateral implant‐supported fixed partial prosthesis

Mandibular overdenture with a single implant in the canine region (c-SIMO): a feasibility study

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