Pont's Analysis is an

analysis Analysis (: analyses) is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (38 ...

developed by Pont in 1909. This analysis allows one to predict the width of the maxillary arch at the

premolar The premolars, also called premolar Tooth (human), teeth, or bicuspids, are transitional teeth located between the Canine tooth, canine and Molar (tooth), molar teeth. In humans, there are two premolars per dental terminology#Quadrant, quadrant in ...

and molar region by measure the mesio-distal widths of the four permanent

incisor Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, wher ...

s. The analysis helps to determine if the

dental arch The dental arches are the two arches (crescent arrangements) of teeth, one on each jaw, that together constitute the dentition. In humans and many other species, the superior (maxillary or upper) dental arch is a little larger than the inferi ...

is narrow or normal and if expansion is possible or not. The width from Left Premolar to Right Premolar or ''Measured Premolar Value (MPV)'' can be calculated by using Sum of Incisal Widths (S.I) of incisors and multiplying it by 100. The result can be divided by 80. The width from Left Molar to Right Molar or ''Measured Molar Value (MMV)'' can be calculated by using the S.I of incisors and multiplying by 100. The result is divided by 64. The widths are measured from occlusal grooves of both premolars and molars.

Disadvantages

One of the drawbacks of this analysis is that the analysis was initially done on French Population by Pont. Therefore, the

data Data ( , ) are a collection of discrete or continuous values that convey information, describing the quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted for ...

cannot be used to make

prediction A prediction (Latin ''præ-'', "before," and ''dictum'', "something said") or forecast is a statement about a future event or about future data. Predictions are often, but not always, based upon experience or knowledge of forecasters. There ...

s for other

population Population is a set of humans or other organisms in a given region or area. Governments conduct a census to quantify the resident population size within a given jurisdiction. The term is also applied to non-human animals, microorganisms, and pl ...

s. This analysis also does not take the alignment of the

teeth A tooth (: teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tear ...

into consideration.{{cite journal, last1=Joondeph, first1=Donald, title=Pont's Index: A clinical Evaluation, journal=Angle Orthodontist, volume=40, issue=2, pages=112–8, date=1970, url=http://www.angle.org/doi/pdf/10.1043/0003-3219(1970)040%3C0112:PIACE%3E2.0.CO%3B2, access-date=17 January 2016, pmid=5266011 In addition, because this analysis only applies to the upper arch serves a drawback also. Maxillary teeth are often missing and Peg Laterals are often seen in the maxillary arch.

Linder Harth Index

Linder Hath index is derived from Pont's Index. The Hath index has a slight variation from Pont's analysis. In the maxillary arch instead of 80, Linder Harth Index uses 85 to achieve the Measured Molar Value.

References

Orthodontics Analysis

Disadvantages

Linder Harth Index

See also

References