{"id":3038,"date":"2026-02-26T21:09:54","date_gmt":"2026-02-26T21:09:54","guid":{"rendered":"https:\/\/www.bestdentalhospitals.com\/blog\/fully-adjustable-articulator-definition-uses-and-clinical-overview\/"},"modified":"2026-02-26T21:09:54","modified_gmt":"2026-02-26T21:09:54","slug":"fully-adjustable-articulator-definition-uses-and-clinical-overview","status":"publish","type":"post","link":"https:\/\/www.bestdentalhospitals.com\/blog\/fully-adjustable-articulator-definition-uses-and-clinical-overview\/","title":{"rendered":"fully adjustable articulator: Definition, Uses, and Clinical Overview"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Overview of fully adjustable articulator(What it is)<\/h2>\n\n\n\n<p>A fully adjustable articulator is a mechanical device that holds dental casts (models of your teeth) to simulate jaw movements.<br\/>\nIt is used to study how the upper and lower teeth meet (occlusion) outside the mouth.<br\/>\nIn many cases, it is used in dental laboratories and in complex restorative and prosthodontic planning.<br\/>\nIts goal is to reproduce a patient\u2019s jaw mechanics as closely as practical, based on clinical records.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why fully adjustable articulator used (Purpose \/ benefits)<\/h2>\n\n\n\n<p>Teeth do not just \u201cclose\u201d; they slide and guide each other during chewing, speaking, and swallowing. Small differences in bite contacts can affect comfort, function, and the way restorations (like crowns, bridges, dentures, or bite splints) fit and feel.<\/p>\n\n\n\n<p>A fully adjustable articulator is used to help clinicians and dental technicians:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Analyze occlusion more predictably<\/strong> by reproducing jaw movements on mounted casts rather than relying only on in-mouth adjustments.<\/li>\n<li><strong>Reduce guesswork for complex cases<\/strong>, especially when multiple teeth are being restored or the bite is being changed.<\/li>\n<li><strong>Design restorations that harmonize with jaw movements<\/strong>, so the teeth contact and glide in a way that aims to be compatible with the patient\u2019s temporomandibular joints (TMJs) and muscles.<\/li>\n<li><strong>Communicate details between the clinic and the laboratory<\/strong>, because the articulator settings can document how the case was planned.<\/li>\n<\/ul>\n\n\n\n<p>In general terms, the \u201cproblem\u201d it addresses is that restorations made on simple models may look correct when the jaw is closed in one position, yet create interferences (unwanted contacts) during side-to-side or forward movements. A fully adjustable articulator is one method used to evaluate and reduce those risks before final delivery. Results vary by clinician and case.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Indications (When dentists use it)<\/h2>\n\n\n\n<p>Common situations where a fully adjustable articulator may be considered include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Full-mouth rehabilitation or extensive reconstruction involving many teeth  <\/li>\n<li>Complex fixed prosthodontics (multiple crowns\/bridges) where occlusion must be carefully coordinated  <\/li>\n<li>Complete dentures or complex removable prostheses when jaw relationships and tooth arrangement require detailed simulation  <\/li>\n<li>Cases with significant changes to vertical dimension (bite \u201cheight\u201d), when planned and documented by the clinician  <\/li>\n<li>Management planning for occlusal schemes (how teeth contact and guide) in advanced restorative workflows  <\/li>\n<li>Patients with complicated occlusal patterns, wear patterns, or history of repeated restoration fracture\/chipping (varies by clinician and case)  <\/li>\n<li>Advanced diagnostic workups using pantographic or similar movement recordings (technique varies)  <\/li>\n<li>Teaching and research settings where jaw movement simulation is part of education or documentation  <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Contraindications \/ when it\u2019s NOT ideal<\/h2>\n\n\n\n<p>A fully adjustable articulator is not always necessary, practical, or cost-effective. Situations where it may be less suitable include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Small, localized restorations<\/strong> (for example, a single uncomplicated filling) where simpler occlusal evaluation is typically adequate  <\/li>\n<li><strong>Limited diagnostic records<\/strong>: if accurate jaw relation records cannot be obtained, the extra adjustability may not improve accuracy  <\/li>\n<li><strong>Time- or resource-limited settings<\/strong>, where the clinical\/lab steps required are not feasible  <\/li>\n<li><strong>Low-complexity cases<\/strong> where a semi-adjustable articulator, mean-value articulator, or direct chairside adjustment may be sufficient (varies by clinician and case)  <\/li>\n<li><strong>When digital workflows are preferred<\/strong> and a virtual articulator approach is used instead (availability varies by clinic and lab)  <\/li>\n<li><strong>When patient factors limit record taking<\/strong>, such as difficulty tolerating impressions\/records or limited ability to repeat jaw movements consistently (varies by patient and case)  <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How it works (Material \/ properties)<\/h2>\n\n\n\n<p>A fully adjustable articulator works by allowing the user to set multiple parameters intended to mimic a patient\u2019s mandibular (lower jaw) movements. These devices typically include adjustable components representing the TMJs (condylar elements) and an anterior guidance component (incisal guide table) to simulate how front teeth guide movement.<\/p>\n\n\n\n<p>Because a fully adjustable articulator is a <strong>device<\/strong>, not a restorative \u201cmaterial,\u201d some properties commonly discussed for dental materials do not apply directly. Below is how to interpret the requested concepts in this context.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Flow and viscosity<\/h3>\n\n\n\n<p>\u201cFlow\u201d and \u201cviscosity\u201d are <strong>not applicable<\/strong> in the way they are for dental composites or cements. The closest relevant concept is the <strong>smoothness and resistance of mechanical movement<\/strong> (how freely the articulator opens, closes, and moves through excursions). This depends on design, maintenance, and manufacturing tolerances, and it varies by manufacturer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Filler content<\/h3>\n\n\n\n<p>\u201cFiller content\u201d is <strong>not applicable<\/strong> to articulators as it is to resin-based restorative materials. A closer parallel is the <strong>construction materials and precision of components<\/strong> (for example, metal alloys, machining quality, and calibration stability), which can influence durability and repeatability. Details vary by manufacturer and model.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Strength and wear resistance<\/h3>\n\n\n\n<p>Strength and wear resistance apply indirectly as <strong>device durability<\/strong>. An articulator must resist wear at moving joints and maintain stable settings over time. Longevity can depend on how often it is used, how it is handled, and how well it is cleaned and maintained. Performance varies by material and manufacturer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Functional \u201cproperties\u201d that matter clinically<\/h3>\n\n\n\n<p>Instead of material chemistry, the clinically relevant \u201cproperties\u201d of a fully adjustable articulator include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Range of adjustability<\/strong> (which movements and angles can be individualized)  <\/li>\n<li><strong>Accuracy and repeatability<\/strong> (how reliably it reproduces the same contacts)  <\/li>\n<li><strong>Compatibility with record systems<\/strong> (facebow transfer systems, jaw movement recording methods)  <\/li>\n<li><strong>Ability to customize anterior guidance<\/strong> (often via customizable incisal guide tables)  <\/li>\n<li><strong>Stability of mounting<\/strong> (how securely casts are positioned and retained)  <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">fully adjustable articulator Procedure overview (How it\u2019s applied)<\/h2>\n\n\n\n<p>A fully adjustable articulator is not \u201capplied\u201d to a tooth the way a filling material is. It is used as part of a <strong>planning and fabrication workflow<\/strong> for restorations or prostheses.<\/p>\n\n\n\n<p>The sequence below includes the requested steps\u2014<strong>Isolation \u2192 etch\/bond \u2192 place \u2192 cure \u2192 finish\/polish<\/strong>\u2014which describe common stages of <strong>direct composite restoration placement<\/strong>. These steps are <strong>not steps for using a fully adjustable articulator<\/strong>, but they may occur in the overall treatment plan when restorations designed on the articulator are ultimately placed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Where the requested steps fit (restoration placement, not articulator setup)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Isolation<\/strong>: keeping the tooth area dry and clean during restorative work  <\/li>\n<li><strong>Etch\/bond<\/strong>: preparing enamel\/dentin and applying adhesive systems (material and technique vary)  <\/li>\n<li><strong>Place<\/strong>: inserting the restorative material or seating a restoration  <\/li>\n<li><strong>Cure<\/strong>: hardening light-cured materials (if used)  <\/li>\n<li><strong>Finish\/polish<\/strong>: refining shape and smoothing surfaces, including occlusion checks  <\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Typical fully adjustable articulator workflow (high-level)<\/h3>\n\n\n\n<p>A simplified, general sequence for using a fully adjustable articulator may look like this:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Record collection<\/strong>: impressions or scans, plus jaw relation records as needed (method varies).  <\/li>\n<li><strong>Facebow transfer (when used)<\/strong>: relates the upper cast to an anatomic reference so it can be mounted in a similar spatial position.  <\/li>\n<li><strong>Mounting casts<\/strong>: secure upper and lower casts on the articulator using the chosen mounting protocol.  <\/li>\n<li><strong>Programming\/adjusting settings<\/strong>: set condylar guidance and related parameters using clinical records (for example, protrusive\/lateral records or jaw tracking; method varies).  <\/li>\n<li><strong>Occlusal analysis<\/strong>: evaluate contacts in closing and during excursions to identify interferences or guidance patterns.  <\/li>\n<li><strong>Diagnostic waxing \/ setup \/ design<\/strong>: plan tooth shapes and contacts for restorations or prostheses.  <\/li>\n<li><strong>Fabrication and verification<\/strong>: create the restoration\/prosthesis and verify fit and occlusion clinically; final adjustments occur in the mouth.<\/li>\n<\/ol>\n\n\n\n<p>The exact steps and records used vary by clinician and case.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Types \/ variations of fully adjustable articulator<\/h2>\n\n\n\n<p>\u201cFully adjustable articulator\u201d describes a category rather than one single design. Common variations include differences in mechanical design, how movements are recorded, and how settings are customized.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">By degree of adjustability (context)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mean-value articulators<\/strong>: use average anatomical values; limited individualization.  <\/li>\n<li><strong>Semi-adjustable articulators<\/strong>: allow some individualized settings (commonly condylar guidance), but not full customization.  <\/li>\n<li><strong>Fully adjustable articulator<\/strong>: allows extensive individualization, often intended to approximate patient-specific border and functional movements more closely.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">By mechanical design<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Arcon vs non-arcon designs<\/strong>: these differ in where the \u201ccondyles\u201d and \u201cfossae\u201d are positioned on the upper vs lower member. The practical impact depends on the specific device and user preferences; teaching and lab conventions vary.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">By how jaw movements are captured<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Record-based programming<\/strong>: uses interocclusal records (for example, protrusive and lateral records) to set guidance values.  <\/li>\n<li><strong>Pantographic or jaw-tracking approaches<\/strong>: use motion recording systems to capture movement pathways; workflows vary by system and training.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">By anterior guidance customization<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Customizable incisal guide tables<\/strong>: may be used to replicate the patient\u2019s anterior guidance or a planned guidance scheme, depending on the case.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Analog vs digital<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mechanical (analog) articulators<\/strong>: physical devices with mounted stone casts or printed models.  <\/li>\n<li><strong>Virtual articulators (digital equivalents)<\/strong>: software-based simulation using intraoral scans and jaw records; these may complement or, in some workflows, replace mechanical articulation. Availability and accuracy depend on the system and records.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Note on \u201clow vs high filler,\u201d \u201cbulk-fill flowable,\u201d and \u201cinjectable composites\u201d<\/h3>\n\n\n\n<p>These examples refer to <strong>restorative resin materials<\/strong>, not articulators. They are <strong>not variations of a fully adjustable articulator<\/strong>. They may be part of the overall treatment workflow if direct restorations are being placed, but they do not describe articulator types.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pros and cons<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pros<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Can simulate jaw movements more individually than simpler articulators (within the limits of records and technique)  <\/li>\n<li>Helpful for planning complex occlusion and restorative schemes before treatment is delivered  <\/li>\n<li>Supports detailed clinic\u2013lab communication through documented settings and mounted casts  <\/li>\n<li>Can reduce reliance on extensive chairside adjustment in some workflows (varies by clinician and case)  <\/li>\n<li>Useful for education and for visualizing occlusal concepts in a controlled setting  <\/li>\n<li>Allows customization of anterior guidance and condylar guidance components in many designs  <\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cons<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Requires more records, more steps, and more time than simpler mounting methods  <\/li>\n<li>Accuracy depends heavily on record quality and user technique (errors can be transferred into the setup)  <\/li>\n<li>May increase laboratory complexity and cost compared with simpler articulators (varies by clinic and lab)  <\/li>\n<li>Not necessary for many routine restorative situations  <\/li>\n<li>Mechanical simulation cannot perfectly reproduce living tissues, neuromuscular control, or joint behavior  <\/li>\n<li>Requires maintenance, calibration awareness, and careful handling to preserve repeatability  <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Aftercare &amp; longevity<\/h2>\n\n\n\n<p>Because the fully adjustable articulator is a planning tool, \u201caftercare\u201d can refer to two areas: (1) the restorations\/prostheses created using the workflow, and (2) the device and records themselves.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Factors that influence how long restorations last (general)<\/h3>\n\n\n\n<p>Longevity of crowns, bridges, dentures, or fillings designed with an articulator depends on many variables, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bite forces and occlusal scheme<\/strong>: heavy forces or unfavorable contacts can increase wear or fracture risk  <\/li>\n<li><strong>Bruxism (clenching\/grinding)<\/strong>: can accelerate wear and complications  <\/li>\n<li><strong>Oral hygiene and gum health<\/strong>: plaque control affects supporting tissues and margins  <\/li>\n<li><strong>Dietary habits<\/strong>: frequent hard or sticky foods can stress restorations  <\/li>\n<li><strong>Material choice and design<\/strong>: ceramics, metals, and resins behave differently; outcomes vary by material and manufacturer  <\/li>\n<li><strong>Regular professional evaluations<\/strong>: monitoring fit and occlusion can identify changes over time  <\/li>\n<\/ul>\n\n\n\n<p>This is general information; individual outcomes vary by patient and case.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Factors that influence articulator and record longevity (general)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Storage and handling of casts\/printed models<\/strong> to prevent chipping or distortion  <\/li>\n<li><strong>Cleanliness of moving parts<\/strong> so mechanical movement remains smooth and settings remain stable  <\/li>\n<li><strong>Protection of records<\/strong> (bite registrations, facebow records) from warping or damage  <\/li>\n<li><strong>Periodic verification<\/strong> that components remain secure and calibrated, per manufacturer guidance  <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Alternatives \/ comparisons<\/h2>\n\n\n\n<p>A fully adjustable articulator is one approach within a spectrum of occlusal analysis and restorative planning methods. Alternatives differ in complexity, required records, and how much they attempt to reproduce individual jaw movements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">fully adjustable articulator vs semi-adjustable articulator<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Semi-adjustable<\/strong> systems typically use fewer individualized settings and are often used for many fixed and removable cases.  <\/li>\n<li>A <strong>fully adjustable articulator<\/strong> offers more customization but generally requires more detailed records and technique.  <\/li>\n<li>The practical benefit of the extra adjustability depends on case complexity, the quality of records, and the user\u2019s experience.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">fully adjustable articulator vs mean-value articulator<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mean-value<\/strong> articulators rely on average settings and are commonly used for simpler tasks.  <\/li>\n<li>A <strong>fully adjustable articulator<\/strong> may better match individual movement patterns when appropriate records are captured, but it is more resource-intensive.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Mechanical articulator vs digital\/virtual articulation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Digital workflows<\/strong> can be efficient and integrate with CAD\/CAM design, but their accuracy depends on scanning quality and jaw relation records.  <\/li>\n<li><strong>Mechanical articulation<\/strong> provides tactile evaluation with physical models. Many practices and labs combine both approaches.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Note on comparisons with flowable vs packable composite, glass ionomer, and compomer<\/h3>\n\n\n\n<p>These are <strong>restorative materials<\/strong> used in fillings and related procedures. They are not direct \u201calternatives\u201d to a fully adjustable articulator, which is a diagnostic and laboratory device. In a broader sense, the articulator may help plan occlusion for restorations made from many materials, including composites, glass ionomer-based materials, ceramics, or metals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common questions (FAQ) of fully adjustable articulator<\/h2>\n\n\n\n<p><strong>Q: Is a fully adjustable articulator something that goes in my mouth?<\/strong><br\/>\nNo. A fully adjustable articulator is a laboratory\/diagnostic device used with models of your teeth. It helps simulate how your jaws move and how your teeth contact during those movements.<\/p>\n\n\n\n<p><strong>Q: Why would my dentist or lab use a fully adjustable articulator instead of a simpler one?<\/strong><br\/>\nIt may be used when the bite is complex or when multiple teeth are being restored and occlusion needs careful coordination. The goal is to better visualize contacts and movements before finalizing restorations. Whether it is used varies by clinician and case.<\/p>\n\n\n\n<p><strong>Q: Does using a fully adjustable articulator mean my treatment will be painless?<\/strong><br\/>\nPain depends on the clinical procedures you actually receive (exams, impressions\/scans, tooth preparation, restorations), not on the articulator itself. The articulator is a planning tool and does not directly cause discomfort. Patient experience varies.<\/p>\n\n\n\n<p><strong>Q: Does it guarantee my crown, bridge, or denture will fit perfectly?<\/strong><br\/>\nNo device can guarantee a perfect outcome. It can support planning and reduce some uncertainties, but clinical verification and adjustment are still commonly required. Results depend on records, technique, materials, and individual anatomy.<\/p>\n\n\n\n<p><strong>Q: How long does it take to use a fully adjustable articulator in a case?<\/strong><br\/>\nTime varies widely based on the records needed and the complexity of the planned restorations. Some workflows require additional appointments for jaw relation records or movement recordings. Laboratory time can also increase compared with simpler mounting methods.<\/p>\n\n\n\n<p><strong>Q: Is it safe?<\/strong><br\/>\nThe articulator itself is external and used on dental models, so it does not present the same safety considerations as an in-mouth device. Safety considerations mainly relate to the clinical procedures used to gather records and deliver restorations, which follow standard dental protocols.<\/p>\n\n\n\n<p><strong>Q: Does it cost more?<\/strong><br\/>\nIt can, because it may involve more records, more laboratory steps, and more clinician\/lab time. Cost ranges depend on the clinic, laboratory, and the overall treatment plan, so pricing varies by clinician and case.<\/p>\n\n\n\n<p><strong>Q: Will I need a \u201crecovery period\u201d because an articulator was used?<\/strong><br\/>\nUsing an articulator does not create a recovery period by itself. Any recovery depends on the dental procedures performed (for example, tooth preparation or new prostheses). Adjustment to a new bite or prosthesis, when it occurs, varies by patient and case.<\/p>\n\n\n\n<p><strong>Q: Is a fully adjustable articulator mainly for TMJ problems?<\/strong><br\/>\nNot necessarily. It is often used for restorative planning and occlusal analysis, which may or may not involve TMJ-related concerns. Decisions about its use depend on the goals of treatment planning and the complexity of occlusion.<\/p>\n\n\n\n<p><strong>Q: If my dentist doesn\u2019t use a fully adjustable articulator, is that a problem?<\/strong><br\/>\nNot automatically. Many successful treatments are completed with semi-adjustable articulators, mean-value articulators, digital tools, or careful chairside adjustment. The appropriate approach depends on diagnosis, complexity, and the clinician\u2019s workflow.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A fully adjustable articulator is a mechanical device that holds dental casts (models of your teeth) to simulate jaw movements. It is used to study how the upper and lower teeth meet (occlusion) outside the mouth. In many cases, it is used in dental laboratories and in complex restorative and prosthodontic planning. Its goal is to reproduce a patient\u2019s jaw mechanics as closely as practical, based on clinical records.<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-3038","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>fully adjustable articulator: Definition, Uses, and Clinical Overview - Best Dental Hospitals<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bestdentalhospitals.com\/blog\/fully-adjustable-articulator-definition-uses-and-clinical-overview\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"fully adjustable articulator: Definition, Uses, and Clinical Overview - Best Dental Hospitals\" \/>\n<meta property=\"og:description\" content=\"A fully adjustable articulator is a mechanical device that holds dental casts (models of your teeth) to simulate jaw movements. It is used to study how the upper and lower teeth meet (occlusion) outside the mouth. In many cases, it is used in dental laboratories and in complex restorative and prosthodontic planning. 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