![]() The requirement was always the same, the turbine needed to be shimmed up another 0.05-0.1 mm. In this real life example, a plant operator found that his machines needed realignment every six months. 2: Measurement results showing machine misalignment Maybe it’s a Foundation ProblemĬapture and analysis of alignment data trends proved useful at a co-generation plant in the San Francisco area. Periodically checking and recording alignment conditions generates useful information about correctable conditions that, if addressed, will reduce breakdowns, increase productivity, and save money.įig. Capturing alignment data before equipment is removed or disassembled, even when maintenance is undertaken for non-alignment reasons, may, over time, reveal hidden causes of misalignment. Vibration analysis might uncover a misalignment problem, but it won’t necessarily identify the reason for it. The root cause of a misalignment condition is not always obvious. It Can Be Difficult to Identify the Cause of Misalignment It depends on accurate and careful analysis of the trends in your alignment data. Effectively countering the factors that influence or alter alignment depends on understanding how the alignment of your machine changes over time and with use. Even the simple and natural succession of the seasons can alter alignment and put machine assets at risk. ![]() When minor process parameters such as pressure or temperature are modified, alignment can change. When a machine vibrates, its skids can move and affect its alignment. Alignment changes when a machine warms up, its alignment can shift with the thermal expansion of its parts. 1: Over 50% of machine failures are due to misalignment Common dental diseases in children and malocclusion. Genetics of the dentofacial variation in human malocclusion. Timetable for oral prevention in childhood - developing dentition and oral habits: A current opinion. Establishing the association between nonnutritive sucking behavior and malocclusions: A systematic review and meta-analysis. Prevalence of dental malocclusions in different geographical areas: Scoping review. The genetic basis of facial skeletal characteristics and its relation with orthodontics. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. This type is usually caused by a large lower jaw and is known as prognathism, meaning that your lower jaw protrudes forward. In this type of malocclusion, your lower teeth overlap with your upper teeth. Class 3Ĭlass 3 malocclusion is diagnosed when you have a severe underbite. If a class 2 malocclusion happens when you have a smaller than usual lower jaw, it is also known as retrognathism (or retrognathia). In this type of malocclusion, your upper teeth and jaw significantly overlap with your lower teeth and jaw. Class 2Ĭlass 2 malocclusion is diagnosed when you have a severe overbite. Class 1 malocclusion is the most common classification of malocclusion. In this type of malocclusion, the bite is typical and your teeth misalignment is not severe. There are three major classes of malocclusion: Class 1Ĭlass 1 malocclusion is diagnosed when your upper molars overlap with your lower molars in a good position, but your other teeth are crowded or spaced too far apart. If your dentist detects malocclusion, they will classify it by its type and severity. Your dentist will examine your teeth and may perform dental X-rays to determine if your teeth are properly aligned. Malocclusion of teeth is typically diagnosed through routine dental exams.
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