The overjet is reduced or reversed. Canine relationship by Ricketts
Class I:
Mesial slope of upper canine coincides with distal slope of lower canine
Class II:
Mesial slope of upper canine is ahead of distal slope of lower canine
Class III:
Mesial slope of upper canine is behind to distal slope of lower canine

Crowding of teeth
Crowding is defined by the amount of space that would be required for the teeth to be in correct alignment. It is obtained in two ways. 1) by measuring the amount of space required and reducing this from calculating the space available via the width of the teeth. Or 2) by measuring the degree of overlap of the teeth. The following criterion is used:0-4mm = Mild crowding
4-8mm = Moderate crowding
>8mm = Severe crowding

Causes
Genetic (inheritance) factors, extra teeth, lost teeth, impacted teeth, or abnormally shaped teeth have been cited as causes of crowding. Ill-fitting dental fillings, crowns, appliances, retainers, or braces as well as misalignment of jaw fractures after a severe injury are also known to cause crowding. Tumors of the mouth and jaw, thumb sucking, tongue thrusting, pacifier use beyond age three, and prolonged use of a bottle have also been identified.Lack of masticatory stress during development can cause tooth overcrowding. Children who chewed a hard resinous gum for two hours a day, showed increased facial growth. Experiments in animals have shown similar results.
Living in a humid region increases sweat and the accumulation of moisture, contributing to the aggravation of the skin. Similarly, poor hygiene can exacerbate friction as this brings dirt and other particles to build up, increasing the potential and severity of an inflammatory response. Infants tendency to drool onto their skin folds also puts them at greater risk for infection and intertrigo. Diagnosis
Streptococcal intertrigo is diagnosed by a medical professional after performing a detailed physical examination and taking an overnight culture of the affected areas. A second sample is tested with a rapid antigen detection test for Group A streptococcus. Upon physical examination, streptococcal intertrigo commonly presents with a marked area of redness of the skin, a distinct, foul smell, and a lack of satellite lesions. The presence of satellite lesions, or lesions smaller and further away from the main affected region, may point to a differential diagnosis of candidal intertrigo, which is a more common cause of these characteristics. Streptococcal intertrigo is frequently underdiagnosed and should be considered as a causative agent when standard therapy for candidal intertrigo fails.Other differential diagnoses which may present similarly include seborrheic dermatitis, atopic dermatitis, irritant contact dermatitis, allergic contact dermatitis, mixed bacterial intertrigo, scabies, erythrasma, and inverse psoriasis. Prevention
Given the main etiology of streptococcal intertrigo is the warm and moist skin surface, in order to prevent future infection and repeat incident of this kind, it is best to keep the affected area and other skin folds clean and dry of moisture.