AIMS: To develop the Jaw Functional Limitation Scale (JFLS), comprising 3 constructs and a global scale, based on a preliminary instrument, and to investigate content validity of the overall functional limitation construct, reliability, and generalizability. A temporomandibular disorders (TMD) patient group, compared to other diagnostic groups, was hypothesized to report further limitation in each of the 3 new proposed constructs. METHODS: One hundred thirty-two consecutive patients from 5 diagnostic groups (TMD, primary Sjogren syndrome, burning mouth syndrome, skeletal malocclusion, and healthy controls) participated in a known-groups validity design. Fifty-two jaw functional limitation items were identified by an expert panel for content validity. Rasch methodology was used for item reduction and assessment of model fit. The instrument was retested 1 to 2 weeks later. RESULTS: Three constructs (mastication, vertical jaw mobility, and emotional and verbal expression) comprising a total of 20 items were identified along with a global scale (the JFLS-20), and each exhibited excellent psychometric properties with respect to modeled variance, item fit, reliability, and internal consistency. The psychometric properties of each construct remained satisfactory when analyzed separately among the 5 diagnostic groups. Temporal stability was satisfactory. A shorter 8-item form (JFLS-8) also proved useful for assessing global functional jaw limitation. CONCLUSION: The JFLS-20 is an organ-specific instrument comprising 3 constructs for assessing functional status of the masticatory system; the 3 scales exhibit properties that are ideal for both research and patient evaluation in patient groups with a range of functional limitations of the jaw. The JFLS-8 emerged as a short form for measuring global functional limitation of the jaw.
AIMS: To develop the Jaw Functional Limitation Scale (JFLS), comprising 3 constructs and a global scale, based on a preliminary instrument, and to investigate content validity of the overall functional limitation construct, reliability, and generalizability. A temporomandibular disorders (TMD) patient group, compared to other diagnostic groups, was hypothesized to report further limitation in each of the 3 new proposed constructs. METHODS: One hundred thirty-two consecutive patients from 5 diagnostic groups (TMD, primary Sjogren syndrome, burning mouth syndrome, skeletal malocclusion, and healthy controls) participated in a known-groups validity design. Fifty-two jaw functional limitation items were identified by an expert panel for content validity. Rasch methodology was used for item reduction and assessment of model fit. The instrument was retested 1 to 2 weeks later. RESULTS: Three constructs (mastication, vertical jaw mobility, and emotional and verbal expression) comprising a total of 20 items were identified along with a global scale (the JFLS-20), and each exhibited excellent psychometric properties with respect to modeled variance, item fit, reliability, and internal consistency. The psychometric properties of each construct remained satisfactory when analyzed separately among the 5 diagnostic groups. Temporal stability was satisfactory. A shorter 8-item form (JFLS-8) also proved useful for assessing global functional jaw limitation. CONCLUSION: The JFLS-20 is an organ-specific instrument comprising 3 constructs for assessing functional status of the masticatory system; the 3 scales exhibit properties that are ideal for both research and patient evaluation in patient groups with a range of functional limitations of the jaw. The JFLS-8 emerged as a short form for measuring global functional limitation of the jaw.
Authors: Richard Ohrbach; Roger B Fillingim; Flora Mulkey; Yoly Gonzalez; Sharon Gordon; Henry Gremillion; Pei-Feng Lim; Margarete Ribeiro-Dasilva; Joel D Greenspan; Charles Knott; William Maixner; Gary Slade Journal: J Pain Date: 2011-11 Impact factor: 5.820
Authors: E L Schiffman; M Ahmad; L Hollender; K Kartha; R Ohrbach; E L Truelove; L Zhang; J S Hodges; E Sommers; G C Anderson; Y M Gonzalez; X Guo; J O Look Journal: J Dent Res Date: 2016-11-19 Impact factor: 6.116
Authors: Eric Schiffman; Richard Ohrbach; Edmond Truelove; John Look; Gary Anderson; Jean-Paul Goulet; Thomas List; Peter Svensson; Yoly Gonzalez; Frank Lobbezoo; Ambra Michelotti; Sharon L Brooks; Werner Ceusters; Mark Drangsholt; Dominik Ettlin; Charly Gaul; Louis J Goldberg; Jennifer A Haythornthwaite; Lars Hollender; Rigmor Jensen; Mike T John; Antoon De Laat; Reny de Leeuw; William Maixner; Marylee van der Meulen; Greg M Murray; Donald R Nixdorf; Sandro Palla; Arne Petersson; Paul Pionchon; Barry Smith; Corine M Visscher; Joanna Zakrzewska; Samuel F Dworkin Journal: J Oral Facial Pain Headache Date: 2014
Authors: Gary C Anderson; Yoly M Gonzalez; Richard Ohrbach; Edmond L Truelove; Earl Sommers; John O Look; Eric L Schiffman Journal: J Orofac Pain Date: 2010
Authors: Eric L Schiffman; Edmond L Truelove; Richard Ohrbach; Gary C Anderson; Mike T John; Thomas List; John O Look Journal: J Orofac Pain Date: 2010
Authors: Richard Ohrbach; Judith A Turner; Jeffrey J Sherman; Lloyd A Mancl; Edmond L Truelove; Eric L Schiffman; Samuel F Dworkin Journal: J Orofac Pain Date: 2010