Browse Dental Tools

Cartridge Total Volume

Calculates total solution volume from number of cartridges and entered cartridge volume.

Epinephrine Micrograms Delivered

Calculates epinephrine mass from solution volume and an entered 1:N concentration denominator.

Local Anaesthetic Dose Delivered

Calculates total local anaesthetic dose from entered concentration and delivered volume.

Maximum Cartridges from Entered Dose Limit

Calculates cartridge count corresponding to a clinician-entered maximum drug mass, concentration and cartridge volume.

Percent Solution to mg/mL

Converts a percentage solution concentration to mg/mL using the standard percentage w/v relationship.

Curing Light Output Retention

Calculates measured curing-light irradiance as a percentage of an entered reference irradiance.

Curing Light Radiant Exposure

Calculates radiant exposure from irradiance and exposure time.

Polymerisation Shrinkage Volume

Estimates absolute volume change from entered restoration volume and percentage volumetric shrinkage.

Powder-to-Liquid Mix Ratio

Calculates the mass-to-volume ratio from entered powder mass and liquid volume.

Required Curing Time from Target Radiant Exposure

Calculates exposure time needed to deliver an entered target radiant exposure at the entered irradiance.

Restoration Configuration Factor (C-Factor)

Calculates the ratio of bonded to unbonded restoration surfaces.

Care Index

Calculates the filled component as a percentage of total DMFT experience.

Caries Increment

Calculates change in a caries-experience index between baseline and follow-up.

Caries Prevalence Percentage

Calculates the percentage of an examined population with recorded caries experience.

Caries Prevented Fraction

Calculates prevented fraction from caries increment in a control group and an intervention group.

Caries Treatment Needs Index (TNI)

Calculates the Treatment Needs Index from decayed and filled teeth.

Caries-Free Percentage

Calculates the percentage of an examined population recorded as caries free.

Community Fluorosis Index (Dean)

Calculates Dean's Community Fluorosis Index from population counts in the six Dean categories.

DMFS Index

Calculates decayed, missing and filled surfaces in permanent dentition.

dmfs Index (Primary Dentition)

Calculates decayed, missing and filled surfaces in primary dentition.

DMFT Index

Calculates the DMFT count from decayed, missing due to caries and filled permanent teeth.

dmft Index (Primary Dentition)

Calculates the dmft index for primary dentition from decayed, missing due to caries and filled primary teeth.

Edentulism Prevalence

Calculates the percentage of examined people recorded as completely edentulous under the chosen definition.

Fissure Sealant Coverage

Calculates the percentage of eligible teeth recorded as sealed in a defined audit or population.

Fluorosis Prevalence Percentage

Calculates the percentage of examined people classified as very mild, mild, moderate or severe by Dean's fluorosis index.

Met Need Index (MNI)

Calculates the proportion of total DMFT represented by missing and filled teeth as an indicator of treatment received.

New Caries Incidence Proportion

Calculates the percentage of an initially at-risk group developing a defined new caries outcome during follow-up.

PUFA Index Mean

Calculates mean PUFA/pufa score from the total recorded consequences of untreated caries.

PUFA Prevalence Percentage

Calculates the percentage of examined people with one or more PUFA/pufa findings.

Recall Attendance Rate

Calculates attendance at planned dental recall appointments within a defined service or cohort.

Restoration Survival Percentage

Calculates the percentage of restorations surviving to a defined follow-up point.

Restorative Index

Calculates filled teeth as a percentage of decayed plus filled teeth.

Root Caries Index (RCI)

Calculates the percentage of exposed root surfaces affected by root caries or root restorations using the Katz Root Caries Index denominator.

Significant Caries Index

Calculates the mean DMFT of the one-third of a population with the highest caries scores when that subgroup has already been identified.

Tooth Retention Percentage

Calculates teeth present as a percentage of an entered expected dentition count.

Untreated Caries Proportion

Calculates the decayed component as a percentage of DMFT.

Dental Radiology & Imaging

Radiograph Magnification Correction

Corrects a measured radiographic target dimension using a reference object of known true size.

AAE Endodontic Case Difficulty Summary

Summarises AAE endodontic case difficulty from the number of moderate- and high-difficulty factors identified on the official AAE assessment form.

Apical Enlargement Percentage

Calculates percentage increase from the initial apical diameter to the final preparation diameter.

Canal Transportation Magnitude

Calculates absolute canal transportation from paired pre- and post-instrumentation wall distances.

Endodontic Centering Ratio

Calculates a centering ratio from paired pre- and post-instrumentation wall-distance changes.

Endodontic File Diameter at Distance

Calculates file diameter at a specified distance from the tip for a stated taper.

Endodontic Recall Attendance Rate

Calculates attendance at planned endodontic review appointments.

Endodontic Success Percentage

Calculates the percentage of reviewed endodontically treated teeth meeting a predefined success definition.

Endodontic Taper from Two Diameters

Calculates canal or instrument taper percentage from two diameters separated by a known distance.

Endodontic Taper Percentage

Calculates taper percentage from diameter change over a measured distance.

Irrigant Volume per Canal

Calculates mean irrigant volume used per treated canal.

Master Cone Tip Size Difference

Calculates difference between the entered final apical preparation diameter and master-cone tip diameter.

Obturation Length Shortfall

Calculates the difference between entered working length and obturation length.

Periapical Index (PAI) Mean

Calculates a weighted mean Periapical Index score from counts of teeth scored 1 through 5.

Periapical Index PAI ≥3 Percentage

Calculates the percentage of PAI-scored teeth recorded at score 3 or higher.

Periapical Lesion Area Change

Calculates absolute change in a consistently measured two-dimensional periapical lesion area.

Periapical Lesion Area Reduction Percentage

Calculates percentage reduction in a consistently measured periapical lesion area.

Radiographic Working Length Correction

Estimates corrected working length using radiographic tooth and instrument lengths with the known inserted instrument length.

Radiographic Working Length Estimate

Estimates tooth length by proportional radiographic correction using a known instrument length.

Remaining Dentin Thickness

Calculates remaining dentin thickness after subtracting entered preparation depth from initial thickness.

Root Canal Apical Enlargement Ratio

Calculates final apical preparation diameter divided by initial apical diameter.

Root Canal Obturation Length Difference

Calculates the difference between measured working length and obturation length.

Schneider Canal Curvature Angle

Calculates the absolute angle between two canal-axis lines used for Schneider-style curvature measurement.

Working Length as Tooth Length Percentage

Calculates working length as a percentage of an entered radiographic or measured tooth length.

Working Length Method Difference

Calculates the numerical difference between two working-length estimates.

Centered Implant Residual Bone per Side

Calculates theoretical residual ridge width on each side of a centered implant.

Crown-to-Implant Ratio

Calculates prosthetic crown height divided by implant length.

Implant Apical Clearance

Calculates measured available bone height minus planned implant length.

Implant Complication Percentage

Calculates implants experiencing a predefined biological or technical complication as a percentage of implants assessed.

Implant Crown Height-to-Length Ratio

Calculates prosthetic crown height divided by implant length.

Implant Failure Percentage

Calculates implant failures as a percentage of implants assessed in a defined cohort.

Implant Length as Percentage of Available Bone

Calculates planned implant length as a percentage of measured available bone height.

Implant Marginal Bone Level Change

Calculates signed change in a consistently measured marginal bone level between two time points.

Implant Marginal Bone Loss Rate

Calculates annualised radiographic marginal bone-level change around an implant.

Implant Mesiodistal Clearance

Calculates total remaining mesiodistal space after subtracting planned implant diameter from an entered edentulous span.

Implant Prosthesis Complication Rate

Calculates prosthetic complications per 100 prosthesis-years of follow-up.

Implant Prosthetic Complication Rate

Calculates prosthetic complications as a percentage of implant restorations followed during a defined audit period.

Implant Retention Percentage

Calculates the percentage of implants remaining in situ in a defined reviewed cohort.

Implant Ridge Width Clearance

Calculates total ridge-width clearance after subtracting implant diameter from measured ridge width.

Implant Stability Quotient Change

Calculates absolute change in implant stability quotient between measurements.

Implant Stability Quotient Percentage Change

Calculates percentage change in implant stability quotient from baseline.

Implant Survival Percentage

Calculates implants remaining in situ as a percentage of implants followed to a defined time point.

Mean Peri-Implant Probing Depth

Calculates mean peri-implant probing depth from the summed measurements and number of sites recorded.

Peri-Implant Bleeding on Probing Percentage

Calculates bleeding-positive peri-implant probing sites as a percentage of peri-implant sites assessed.

Peri-Implant Plaque Percentage

Calculates plaque-positive peri-implant sites as a percentage of peri-implant sites assessed.

Peri-Implant Probing Depth Change

Calculates change in mean peri-implant probing depth between baseline and follow-up.

Peri-Implantitis Prevalence Percentage

Calculates the percentage of assessed implants meeting a predefined peri-implantitis case definition.

Salivary Flow Change Percentage

Calculates percentage change in salivary flow rate between baseline and follow-up measurements.

Salivary Stimulation Ratio

Calculates stimulated whole salivary flow divided by unstimulated whole salivary flow.

Stimulated Salivary Flow Rate

Calculates stimulated whole salivary flow rate from collected volume and collection time.

Unstimulated Salivary Flow Rate

Calculates unstimulated whole salivary flow rate from collected volume and collection time.

Alveolar Osteitis Incidence

Calculates the percentage of eligible dental extractions followed by alveolar osteitis during a defined audit period.

Epinephrine Delivered Dose per kg

Calculates delivered epinephrine dose in micrograms per kilogram from the total micrograms administered and patient weight.

Local Anaesthetic Delivered Dose per kg

Calculates delivered local anaesthetic dose in mg/kg from the total milligrams administered and patient weight.

Local Anaesthetic Dose Limit Utilisation

Calculates delivered anaesthetic dose as a percentage of a clinician-entered maximum dose in milligrams.

Maximum Cartridges from Entered Epinephrine Limit

Calculates a theoretical cartridge count from a clinician-entered epinephrine limit and epinephrine content per cartridge.

Weight-Based Maximum Cartridges from Entered Dose Limit

Calculates a theoretical cartridge count from a clinician-entered mg/kg limit, patient weight, anaesthetic concentration and cartridge volume.

ANB Angle

Calculates the ANB angle as SNA minus SNB for cephalometric sagittal assessment.

Arch Length Discrepancy

Calculates available arch space minus required tooth material.

Arch Perimeter Change

Calculates change in measured dental arch perimeter between records.

Bolton Anterior Tooth-Size Ratio

Calculates the Bolton anterior tooth-size ratio from summed mesiodistal widths of the six anterior teeth in each arch.

Bolton Mandibular Tooth-Size Excess

Estimates mandibular tooth-size excess relative to an entered target Bolton ratio.

Bolton Maxillary Tooth-Size Excess

Estimates maxillary tooth-size excess relative to an entered target Bolton ratio.

Bolton Overall Tooth-Size Ratio

Calculates the Bolton overall tooth-size ratio from summed mesiodistal widths of the first molar to first molar in each arch.

Intercanine Width Change

Calculates change in intercanine width between two records.

Intermolar Width Change

Calculates change in intermolar width between two records.

IOTN DHC Grade 3–5 Trigger Helper

Helps identify IOTN Dental Health Component grade 3, 4 or 5 triggers from key measurable and categorical traits in the permanent dentition.

Jarabak Facial Height Ratio

Calculates posterior facial height as a percentage of anterior facial height.

Leeway Space

Calculates space difference between primary canine/molar tooth material and successor canine/premolar tooth material.

Little Irregularity Index

Sums five linear contact-point displacement measurements for mandibular anterior irregularity.

Lower Anterior Facial Height Percentage

Calculates lower anterior facial height as a percentage of total anterior facial height.

Midline Discrepancy Change

Calculates change in the magnitude of a recorded dental midline discrepancy.

Mixed Dentition Space Difference

Calculates available arch space minus predicted or measured unerupted tooth material.

Orthodontic Appointment Attendance Rate

Calculates attended orthodontic appointments as a percentage of planned appointments.

Orthodontic Emergency Visit Rate

Calculates unscheduled orthodontic emergency visits per 100 active treatment months.

Orthodontic Irregularity Change

Calculates signed change in an entered irregularity measurement between baseline and follow-up.

Orthodontic Residual Space Change

Calculates signed change in residual orthodontic space between two treatment time points.

Orthodontic Space Closure Rate

Calculates mean space closure per month from baseline and follow-up space measurements.

Orthodontic Total Space Discrepancy

Calculates arch space surplus or deficiency from available and required space.

Orthodontic Treatment Duration

Converts an entered active orthodontic treatment duration in days to months using 30.44 days per average month.

Overbite Change

Calculates absolute change in overbite between baseline and follow-up.

Overbite Percentage

Calculates vertical incisor overlap as a percentage of the mandibular incisor clinical crown height.

Overjet Change

Calculates change in overjet between baseline and follow-up measurements.

PAR Percentage Reduction

Calculates percentage reduction in Peer Assessment Rating (PAR) score between pretreatment and post-treatment.

PAR Point Reduction

Calculates absolute reduction in Peer Assessment Rating score.

PAR Reduction per Treatment Month

Calculates absolute PAR point reduction per month of active orthodontic treatment.

Pont Molar Width Estimate (Historical)

Calculates the historical Pont estimate for molar arch width from the summed maxillary incisor widths.

Pont Premolar Width Estimate (Historical)

Calculates the historical Pont estimate for premolar arch width from the summed maxillary incisor widths.

Tanaka-Johnston Mandibular Prediction

Predicts combined canine and premolar width per mandibular quadrant from the summed mandibular incisor widths.

Tanaka-Johnston Maxillary Prediction

Predicts combined canine and premolar width per maxillary quadrant from the summed mandibular incisor widths.

Tweed Triangle Missing Angle

Calculates the third angle of the Tweed diagnostic triangle from two entered angles.

Upper Anterior Facial Height Percentage

Calculates upper anterior facial height as a percentage of total anterior facial height.

Wits Appraisal

Calculates the signed AO–BO distance used in the Wits appraisal of anteroposterior jaw relationship.

Paediatric Dentistry

Fissure Sealant Retention Percentage

Calculates completely retained fissure sealants as a percentage of sealants reviewed at a defined follow-up.

Paediatric Dentistry

Fluoride Varnish Coverage

Calculates the percentage of an eligible cohort receiving fluoride varnish within a defined audit period.

Bleeding on Probing Change

Calculates the absolute change in full-mouth bleeding-on-probing percentage between baseline and reassessment.

Bleeding on Probing Percentage

Calculates bleeding-on-probing sites as a percentage of periodontal sites examined.

BPE Highest Sextant Score Summary

Returns the highest Basic Periodontal Examination code entered across six sextants as a screening summary.

Clinical Attachment Level

Calculates clinical attachment level when the gingival margin is apical to the CEJ.

Furcation Involvement Prevalence

Calculates the percentage of assessed multirooted teeth recorded with furcation involvement.

Gingival Health Percentage

Calculates non-bleeding periodontal sites as a percentage of sites examined.

Gingival Index Mean

Calculates the arithmetic mean of recorded Gingival Index scores.

Gingival Recession Change

Calculates change in recorded gingival recession between visits.

Mean Clinical Attachment Gain

Calculates mean clinical attachment gain from baseline and follow-up mean CAL values.

Mean Clinical Attachment Level

Calculates mean clinical attachment level from the summed CAL measurements and number of sites.

Mean Periodontal Probing Depth

Calculates mean probing depth from the summed probing depths and number of sites recorded.

Papillary Bleeding Index (PBI) Mean

Calculates mean Papillary Bleeding Index score from the summed 0–4 papillary scores and number of papillae scored.

Periodontal Attachment Loss Rate

Calculates annualised change in clinical attachment level between two observations.

Periodontal Deep-Site Improvement

Calculates percentage reduction in the number of sites meeting a defined deep-pocket threshold between baseline and reassessment.

Periodontal Pocket Closure Percentage

Calculates the percentage of treated periodontal sites meeting the clinician's defined pocket-closure endpoint at reassessment.

Periodontal Pocket Depth Reduction

Calculates baseline probing depth minus follow-up probing depth.

Periodontal Pocket Depth Reduction Percentage

Calculates probing-depth reduction as a percentage of baseline probing depth.

Periodontal Probing Depth Change Rate

Calculates annualised change in probing depth at a consistently measured site.

Periodontal Reassessment Improvement Rate

Calculates the percentage of reassessed sites or teeth meeting a predefined improvement endpoint.

Periodontal Stable Sites Percentage

Calculates the percentage of examined periodontal sites meeting a clinician-defined stability criterion.

Periodontal Tooth Loss Rate

Calculates teeth lost for periodontal reasons per year during a defined follow-up period.

Periodontal Treatment Completion Rate

Calculates the percentage of patients who completed a defined periodontal treatment programme.

Periodontitis Indirect Grade from RBL/Age

Calculates the radiographic bone-loss-to-age ratio and returns the indirect progression grade band from the 2018 periodontitis framework.

Plaque Score Change

Calculates the absolute change in a percentage plaque score between baseline and reassessment.

Plaque-Free Score Percentage

Calculates plaque-free surfaces as a percentage of examined surfaces.

Radiographic Bone Level Change

Calculates follow-up bone-level measurement minus baseline measurement using a consistent reference.

Radiographic Bone Loss Percentage

Estimates radiographic periodontal bone loss as a percentage of measured root length.

Radiographic Bone Loss-to-Age Ratio

Calculates radiographic bone loss percentage divided by patient age as an indirect progression indicator used within periodontal grading.

Residual Periodontal Pocket Percentage

Calculates residual periodontal pockets as a percentage of sites reassessed after treatment.

Silness–Löe Plaque Index Mean

Calculates a mean Silness–Löe plaque index score from the total score and number of scored surfaces.

Simplified Oral Hygiene Index (OHI-S)

Calculates OHI-S by adding the Debris Index-Simplified and Calculus Index-Simplified mean scores.

Sites ≥4 mm Percentage

Calculates the percentage of recorded periodontal sites with probing depth of 4 mm or more.

Sites ≥6 mm Percentage

Calculates the percentage of recorded periodontal sites with probing depth of 6 mm or more.

Supportive Periodontal Care Attendance Rate

Calculates attendance at planned supportive periodontal care visits.

Tooth Loss Rate

Calculates annualised tooth loss over a defined follow-up interval for monitoring or audit.

Tooth Mobility Prevalence

Calculates the percentage of assessed teeth recorded with clinically relevant mobility.

Preventive Dentistry

Approximal Plaque Index (API)

Calculates plaque-positive approximal sites as a percentage of assessed approximal sites.

Preventive Dentistry

Plaque Control Record

Calculates the percentage of examined tooth surfaces with disclosed plaque.

Preventive Dentistry

Plaque Index Mean

Calculates the arithmetic mean of recorded Plaque Index scores.

Denture Adjustment Visit Rate

Calculates post-delivery adjustment visits per 100 dentures delivered.

Denture Base Dimensional Change

Calculates percentage dimensional change between an initial and final linear measurement.

Freeway Space

Calculates freeway space from rest vertical dimension and occlusal vertical dimension.

Occlusal Vertical Dimension Change

Calculates change in recorded occlusal vertical dimension between records.

Posterior Functional Tooth Units (FTU)

Calculates posterior functional tooth units from opposing premolar and molar pairs.

Prosthesis Remake Percentage

Calculates prostheses requiring remake as a percentage of prostheses reviewed.

Prosthesis Repair Rate

Calculates the percentage of delivered prostheses requiring repair during the defined audit period.

Basic Erosive Wear Examination (BEWE)

Sums the highest erosive tooth-wear score recorded in each of six sextants and classifies the original BEWE cumulative risk level.

Clinical Crown Width-to-Height Ratio

Calculates clinical crown width as a percentage of clinical crown height.

Crown-to-Root Ratio

Calculates measured crown length divided by measured root support length.

Post Length Percentage of Root

Calculates post length as a percentage of measured root length.

Remaining Gutta-Percha Length

Calculates remaining root filling length after preparation of a stated post space.

Restoration Failure Percentage

Calculates failed restorations as a percentage of restorations reviewed.

Restoration Repair Percentage

Calculates restorations requiring repair as a percentage of restorations reviewed.

Restorative Occlusal Clearance Difference

Compares measured restorative clearance with a clinician-entered required clearance.

Smith–Knight Tooth Wear Index Mean

Calculates a weighted mean Smith–Knight Tooth Wear Index score from counts of surfaces scored 0 through 4.

Smith–Knight TWI Score 3–4 Surface Percentage

Calculates the percentage of Smith–Knight scored surfaces recorded at TWI score 3 or 4.

Successive Anterior Tooth Width Ratio

Calculates the visible width of a successive anterior tooth as a percentage of the preceding tooth width.

Tooth Reduction Percentage

Calculates proportional reduction from an original measured thickness or dimension.

Vertical Dimension Change

Calculates follow-up vertical dimension minus baseline vertical dimension.