Resisting the urge to act on impulses is important to teach children, because it teaches the value of delayed gratification. Many psychological problems are characterized by a loss of control or a lack of control in specific situations. Usually, this lack of control is part of a pattern of behavior that also involves other maladaptive thoughts and actions, such as substance abuse problems or sexual disorders like the paraphilias (e.g. pedophilia and exhibitionism). When loss of control is only a component of a disorder, it usually does not have to be a part of the behavior pattern, and other symptoms must also be present for the diagnosis to be made. (Franklin)

The five traits that can lead to impulsive actions
For many years it was understood that impulsivity is a trait but with further analysis it can be found that there were five traits that can lead to impulsive actions:
positive urgency, 
negative urgency,
sensation seeking, 
lack of planning, and
lack of perseverance. Associated behavioral and societal problems
Attention-deficit hyperactivity disorder
Attention deficit-hyperactivity disorder (ADHD) is a multiple component disorder involving inattention, impulsivity, and hyperactivity. The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) breaks ADHD into three subtypes according to the behavioral symptoms:
Attention-Deficit/Hyperactivity Disorder Predominantly Inattentive Type,
Attention-Deficit/Hyperactivity Disorder Predominantly Hyperactive-Impulsive Type, and
Attention-Deficit/Hyperactivity Disorder Combined Type. Predominantly hyperactive-impulsive type symptoms may include
fidgeting and squirming in seats,
talking nonstop,
dashing around and touching or playing with anything in sight,
having trouble sitting still during dinner/school/story time,
being constantly in motion, and
having difficulty doing quiet tasks or activities.
Hypercementosis is an idiopathic, non-neoplastic condition characterized by the excessive buildup of normal cementum (calcified tissue) on the roots of one or more teeth. A thicker layer of cementum can give the tooth an enlarged appearance, which mainly occurs at the apex or apices of the tooth. Signs and symptoms
It is experienced as an uncomfortable sensation in the tooth, followed by an aching pain.It may be shown on radiographs as a radiopaque (or lighter) mass at each root apex. Cause
Can be caused by many things. A way to remember the causes is "PIG ON TAP"Local factors- 

Occlusal Trauma
Trauma
Non-functional tooth
Unopposed tooth (and impacted teeth, embedded teeth, teeth without antagonists)Systemic factors-

Idiopathic
Pituitary Gigantism
Pagets Disease
Acromegaly
Periapical granuloma
Arthritis
Calcinosis
Rheumatic feverIt may be one of the complications of Pagets disease of bone in the form of generalized hypercementosis. It may also be a compensatory mechanism in response to attrition to increase occlusal tooth height. Complications
Such deposits form bulbous enlargements on the roots and may interfere with extractions, especially if adjacent teeth become fused (concrescence). It may also result in pulpal necrosis by blocking blood supply via the apical foramen. References


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