Study
Classic DesignHigh ImpactStrong effect

Lateral Incisor Ratio Predicts Anterior Tooth Proportion with 70% Accuracy

A simplified ratio of maxillary and mandibular lateral incisors can reliably estimate the overall anterior tooth proportion, correlating strongly with established measures.

BMC Oral Health · 2022

01

Key Findings

  • 01Patients with abnormal anterior Bolton ratios were more likely to have variations in maxillary and mandibular lateral incisors.
  • 02The ratio of maxillary and mandibular lateral incisors (SATR) showed a positive correlation with the anterior Bolton ratio (r = 0.702, p < 0.001).
  • 03A standard SATR value was established as 85.69% ± 3.57%.
02

Application

Design takeaway

Designers in related fields should consider developing tools or guidelines that incorporate this simplified lateral incisor ratio for quicker, yet effective, proportion assessment.

How to apply

When designing diagnostic aids or educational materials for dental professionals, consider integrating the SATR as a primary or supplementary assessment tool.

Project actions

  • 01When evaluating classic designs, look for underlying proportional systems that might be simplified or adapted.
  • 02Consider how a complex measurement in your field could be simplified without losing significant accuracy.
03

Method & Evidence

AimTo establish a simple, reliable method for assessing the anterior tooth ratio and identify a standard ratio value for clinical reference.
MethodObservational study with statistical analysis (t-tests, correlation, regression, chi-square, diagnostic tests).
ProcedurePatients were divided into derivation, standard, and validation datasets. Key teeth for a simplified anterior tooth ratio (SATR) were identified using the derivation dataset. Standard values were established by measuring standard models. The diagnostic performance of SATR was then validated against the anterior Bolton ratio.
Sample514 participants
ContextDental and orthodontic practice.

Variables

IVRatio of maxillary and mandibular lateral incisors (SATR).
DVAnterior Bolton ratio (as a proxy for overall anterior tooth proportion).
CVParticipant demographics, dental anomalies (implicitly controlled by dataset division and statistical methods).
04

Strengths & Limitations

Strengths

  • +Large sample size.
  • +Validation of the proposed method.

Limitations

The sample size and demographic characteristics of the participants might limit the generalizability of the findings to other populations.

Reliability & validity

The study reports a strong correlation (r=0.702) and validation of the SATR, suggesting good reliability and validity for its intended purpose within the studied context.

Think critically

How might the 'ideal' proportions identified in this study be influenced by cultural aesthetics, and how could a design account for such variations?

05

Design Principles

"Simplicity in measurement can lead to effective and reliable diagnostic tools when based on sound correlational evidence."

Understanding and quantifying ideal proportions is fundamental in fields like dentistry and orthodontics, where aesthetics and function are paramount. This research offers a more accessible method for assessing these proportions, potentially streamlining diagnostic processes and patient communication.

06

What This Means for Your Design

You can guess the overall front tooth size by just looking at the side front teeth (lateral incisors) – their size ratio is a good clue.

How to use in your project

  • 1.Reference this study when discussing the importance of proportion and measurement in your design project, especially if your design aims to simplify a complex diagnostic or analytical process.
07

Add to My Project

08

Quick Cite

(2022). A simple method for quick evaluation of the anterior tooth ratio: an observational study. BMC Oral Health. https://doi.org/10.1186/s12903-022-02517-3 Retrieved from https://designdex.org/study/a8444451-2df6-43f2-b4ec-f0cc9767e835/lateral-incisor-ratio-predicts-anterior-tooth-proportion-with-70-accuracy

Paragraph starter

This research demonstrates that a simplified ratio of maxillary and mandibular lateral incisors (SATR) can effectively estimate the overall anterior tooth proportion, correlating strongly (r=0.702) with established measures like the anterior Bolton ratio. This highlights the potential for developing more accessible diagnostic tools by identifying key proportional relationships within a system.

09

Source

BMC Oral Health

A simple method for quick evaluation of the anterior tooth ratio: an observational study

journal · 2022

View source

Questions about this research

What does the research say about lateral incisor ratio predicts anterior tooth proportion with 70% accuracy?
Designers in related fields should consider developing tools or guidelines that incorporate this simplified lateral incisor ratio for quicker, yet effective, proportion assessment. Evidence: BMC Oral Health (2022).
Why does "Lateral Incisor Ratio Predicts Anterior Tooth Proportion with 70% Accuracy" matter for design?
Understanding and quantifying ideal proportions is fundamental in fields like dentistry and orthodontics, where aesthetics and function are paramount. This research offers a more accessible method for assessing these proportions, potentially streamlining diagnostic processes and patient communication.
How can designers apply this research?
Designers in related fields should consider developing tools or guidelines that incorporate this simplified lateral incisor ratio for quicker, yet effective, proportion assessment.
What were the main findings?
Patients with abnormal anterior Bolton ratios were more likely to have variations in maxillary and mandibular lateral incisors.. The ratio of maxillary and mandibular lateral incisors (SATR) showed a positive correlation with the anterior Bolton ratio (r = 0.702, p < 0.001).. A standard SATR value was established as 85.69% ± 3.57%.
What research method was used?
Observational study with statistical analysis (t-tests, correlation, regression, chi-square, diagnostic tests). with 514 participants.
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2022 journal from BMC Oral Health.
What should I do differently in my next project?
When designing diagnostic aids or educational materials for dental professionals, consider integrating the SATR as a primary or supplementary assessment tool.
What are the limitations?
The study focused on a specific population, and the SATR's applicability may vary across different ethnic groups or individuals with unique dental anomalies not represented in the sample.
Is there evidence that lateral incisor affects design outcomes?
The ratio between the widths of the maxillary and mandibular lateral incisors can be used as a simple and reliable indicator for the overall proportion of anterior teeth, correlating well with more complex measurements. Understanding and quantifying ideal proportions is fundamental in fields like dentistry and orthodon Source: BMC Oral Health (2022).
Where does this incisor ratio research apply?
Dental and orthodontic practice. It sits within classic design research on designdex.org.

Related research topics

lateral incisor design research · evidence on lateral incisor · does lateral incisor improve design outcomes · incisor ratio studies for designers · lateral incisor and incisor ratio findings · classic design research evidence