Gutta-Percha Taper Fit Checker

Actual same-position cone/canal diameter discrepancies against independently applicable geometric tolerance. Not establish three-dimensional fit, tug-back, apical seal, obturation quality or safe insertion.

Description

Cone and prepared-canal diameter comparisons require matched positions.

Cone and prepared-canal diameter comparisons require matched positions.^[1]

A dimensional tolerance check does not establish an apical seal or clinical fit. Use this tool to calculate the stated observation or conditional model from supplied measurements.

When to use Gutta-Percha Taper Fit Checker

Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the qualified examination or measurement context, matching instrument/protocol edition, site order and units.

How to use Gutta-Percha Taper Fit Checker and understand its results

Establish the qualified examination or measurement context, matching instrument/protocol edition, site order and units.
Enter actualMeasuredGuttaPerchaDiametersMm, matchedIndependentlyMeasuredPreparedCanalDiametersMm, callerClinicianApplicableAbsoluteToleranceMm, using the field meanings and rules below, then run the tool.
Read result.signedConeMinusCanalMm, result.withinCallerToleranceFlags. Interpret each field using the units, signs and evidence rules below.
If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.

Input field	Meaning	Value type	Requirement
actualMeasuredGuttaPerchaDiametersMm	Actual measured gutta percha diameters mm	list of number	Required
matchedIndependentlyMeasuredPreparedCanalDiametersMm	Matched independently measured prepared canal diameters mm	list of number	Required
callerClinicianApplicableAbsoluteToleranceMm	Caller clinician applicable absolute tolerance mm	number	Required

Require nonempty aligned nonnegative cone and canal diameters in millimeters and nonnegative caller tolerance. Return cone−canal per position and binary flags when abs(difference)≤tolerance+1e−12 mm. The small additive floating-point allowance is explicit; matched positions and clinical appropriateness remain external.

differenceMm_i=coneMm_i−canalMm_i; withinFlag_i=abs(differenceMm_i)≤callerToleranceMm+1e−12

Apply the field units and exact ordering, boundary and evidence rules above.

Output field	Meaning	Value type
result	Structured result containing the calculation or selected reference fields below	object
result.signedConeMinusCanalMm	Signed Cone Minus Canal Mm; use the units, sign convention and calculation stated above	list of number
result.withinCallerToleranceFlags	Within Caller Tolerance Flags; use the units, sign convention and calculation stated above	list of number

json

{
  "input": {
    "actualMeasuredGuttaPerchaDiametersMm": [
      0.3,
      0.5
    ],
    "matchedIndependentlyMeasuredPreparedCanalDiametersMm": [
      0.4,
      0.4
    ],
    "callerClinicianApplicableAbsoluteToleranceMm": 0.1
  },
  "output": {
    "result": {
      "signedConeMinusCanalMm": [
        -0.10000000000000003,
        0.09999999999999998
      ],
      "withinCallerToleranceFlags": [
        1,
        1
      ]
    }
  }
}

Limitations and assumptions

A dimensional tolerance check does not establish an apical seal or clinical fit. Results depend on the independently established measurement basis and the exact model assumptions above.

Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.

Alternative or Complementary methods

Use Taper Selection Lookup to examine a related aspect: Endodontic taper selection depends on anatomy, preparation objectives and instrument specifications.

Use K-File Size Progression Lookup where its separate inputs and scope apply: Nominal endodontic file size identifies a tip diameter in hundredths of a millimeter.

References

Gutta-Percha Taper Fit Checker — tool.io

Similar or alternative tools

Taper Selection Lookup
Endodontic taper selection depends on anatomy, preparation objectives and instrument specifications.
K-File Size Progression Lookup
Nominal endodontic file size identifies a tip diameter in hundredths of a millimeter.