How to write an introduction for a research paper WITH EXAMPLES
Introduction, like any other section of an academic paper, is important and needs to be written appropriately. It is possible for it to lack vital information or be devoid of important ones.
Attached to this post is a video explaining in detail, all that is required to write a detailed and excellent introduction. Make sure to watch to the end.
Interestingly, I've copied the introduction of one of my papers as an example below. Make sure to read and note the details explained in the video.
WATER
FLUORIDATION VERSUS FLUORIDE TOOTHPASTE FOR THE PREVENTION OF DENTAL CARIES IN
CHILDREN: A SYSTEMATIC REVIEW.
CHAPTER 1: INTRODUCTION
World Health Organisation
(1962) has defined dental caries as 'a localised, post-eruptive, pathological
process of external origin involving softening of the hard tooth tissue and
proceed to the formation of a cavity'. Caries leads to an imbalance in the
de-mineralization and re-mineralization of dental hard tissue. The aetiology of
dental caries results from a complex interplay of several factors which
include: cariogenic bacteria, saliva, sugar and time (Alayyan, 2017;
Fisher-owens, 2007). The involvement of these factors makes it a multi-factorial
disease.As a public health issue, several people in the world from high, middle
and low-income countries are affected by dental caries with a prevalence rate
of approximately 30% - 50% in children from high-income countries (Vernazza, 2016; Dye,
2015) and 90% in low-income countries (Ayele, 2013; Peltzer, 2015). It is
ranked as one of the most common 'preventable chronic disease in children'
being seven times commoner than hay fever and five times commoner than asthma (Alazmah,2017).
Currently, the persistence of
social inequality in dental health has been associated with the variation in
the prevalence of the disease around the world (Walsh, 2010; Vernazza, 2016).
While some countries have experienced a reduction in the burden of the disease,
many countries and communities are still significantly burdened by the disease.
The United Kingdom has experienced a significant reduction in the prevalence
and severity of dental caries. According to a national survey in England, 27.3%
decrease in dental caries was recorded among five year olds between 2008 and
2015 (Public Health England (2016). Wales and Scotland also recorded a similar
trend of decrease prevalence which was attributed to increase fluoride
prescription and use (Jones, 2017 ).
The situation in America and several Asian countries is quite the opposite.
From 1988 till 2004, America recorded an increase in prevalence among children
from 24% to 28%. However, this prevalence has further increased to 36.7% as
reported by the National Centre for Health Statistics (Dye, 2015 ). In the low-income countries in Africa,
there is a rapid surge in caries burden because of the increased rate of sugar
consumption and minimal exposure to fluoride use ., according to the World
Health Organization (WHO, 2016). .Although
caries reduction among adults has been quite successful, the challenge remains
in prevention among children.
At population level, untreated
caries in children leads to severe pain, growth distortion, tooth loss,
behavioural changes, dysfunction as regards speech, sleep and feeding (Schroth, 2014 ). Furthermore, the disease also has both
emotional and social impact on the children in terms of linkage between low
self-esteem and tooth loss with an overall decrease in quality of life (Shah,
2015; Moure-Leite, 2011; Blumenshine, 2008). Untreated dental caries in
permanent teeth was the most prevalent chronic condition reviewed in the Global
Burden of Diseases in 2010 affecting 35% of the global population. The
prevalence in primary teeth is affecting an approximate of 621 million children
globally (Kassebaum, 2015). The existence of caries in primary teeth is a major
predisposing factor to having cares involving the permanent teeth. Children
with primary teeth caries have a three times likelihood of developing caries
involving their permanent teeth particularly if all causative factors remains
thesame (Peretz, 2003). There are also financial implications of dental caries
with a large percentage of healthcare budget allocated to treating it. A focus
on prevention of the disease is considered more cost-effective than treatment
and l will improve oral health alongside the overall wellbeing of the children
(Alazmah, 2017).
Fluoridation is a caries
preventive and treatment strategy that has been in existence for over eighty
years and still remains the cornerstone of caries intervention till date (Ferjerskov,
2008; Marinho, 2003a). Fluoridation can be done via the topical or systemic
route.Topically, the fluoride (in high concentration) is applied directly to
the tooth surface without ingesting it while on the contrast, the systemic
route involves the ingestion of fluoride.
Toothpastes are either
fluoridated or non-fluoridated. Fluoride toothpaste (also known as dental dentifrice)
is the most used and readily available form of topical fluoridation in the
prevention of dental caries (Marinho, 2003b). Available in various
concentration and composition, several dental bodies have contributed to
increase usage of toothpaste. The various fluoride compound include sodium
fluoride, sodium monofluorophosphate, amine fluoride and stannous fluoride
(Walsh, 2010; Marinho, 2003b). Fluoride is not the only constituent of
fluoridated toothpaste, it also contains abrasives, surfactant, pigments and
flavours.
Public health professionals
and researchers have made an evidence-based conclusion that fluoridated
toothpaste is the ‘method of choice’ in the prevention of childhood caries.
This conclusion was based on its convenience , availability, effectiveness and
cultural approval (Messina, 2016; WHO, 2016; Marinho, 2004).However, the usage
of fluoridated toothpaste in middle and low-income countries is limited because
of its cost.
Water fluoridation (also known
as community water fluoridation); the most popular form of systemic fluoridation
is the a specified quantity of fluoride compound to public water supply for
consumption. The optimum amount of fluoride required in water is 1ppm (WHO,2011)
while the maximum level safe for consumption is 1.5ppm according to the
European Union water quality directive (European Union,1998).
Community water fluoridation
began in USA in1945 and still practised in approximately 25 countries in the
world. It is believed to play a massive role of about 40% - 70% in the prevention
of dental caries among children ( check ppt presentation. ). This form of
intervention impacts the population and requires no individual approval or
consent. However, it is not without criticism concerning the ethics of ‘mass intervention’
(Nuffield, 2007).
Arguably, the local effect
fluoride has on tooth surface has been considered the most important effect
against caries. The regular usage of fluoridated toothpaste causes an elevated
amount of fluoride in the saliva which in turn results in the deposition of
calcium fluoride on the tooth surface. Calcium fluoride functions acts by
resisting the acid attack by cariogenic bacteria (Messina, 2016; Staun-Larsen,
2017). The effectiveness of fluoride action on tooth surface is measured using
the standardized World Health Organisation index called the ‘decayed, missing,
filled teeth index’ (DMFT or dmft in permanent and primary teeth respectively).
The index measures the change in caries activity (Khamis, 2016).
Fluoride provides a balance
between demineralisation and remineralisation process, this is essential in
caries prevention. Ingestion of fluoride in water fluoridation exposes the oral
cavity to fluoride ions and its protective effects (Cheng,2007).
In
conclusion, the prevention of dental caries is considered a priority than
treatment because of its cost-effectiveness (Cummins, 2013).Fluoridation
remains the cornerstone of dental caries prevention. There is a current
variation in the prevalence of dental caries, therefore, countries with high
prevalence are in need of preventive measures that is effective in achieving a
decline with a limited budget.Water fluoridation and fluoride toothpastes are
the two most used and popular methods of fluoridation. The purpose of this
review is to determine the most effective of the two interventions in the
prevention of dental caries.
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